E. M. Badr, M. I. Moussa & K. Kathiresan (2011): Crown graphs and subdivision of ladders are odd graceful, International Journal of Computer Mathematics, 88:17, 3570- 3576. M. I. Moussa and E. M. Badr (2012): A Computational Study for the Graph-Theoretic Version of the Union-Closed Sets Conjecture, International Journal of Computer Applications, Volume 50 – No.12, July 2012.  E. M. Badr and M. I. Moussa (2012): ODD GRACEFUL LABELINGS OF CYCLIC SNAKES, Electronic Journal of Nonlinear Analysis and Application, Vol. 6, 115-119.  E. M. Badr (2012): On the Odd Gracefulness of Cyclic Snakes With Pendant Edges , Journal on Applications of Graph Theory in Wireless Ad hoc Networks and Sensor Networks (GRAPH-HOC), 4(4), 1 - 9.  E. M. Badr (2012): Some Computational Results on MPI Parallel Implementation of Derived Subgraph Algorithm, International Journal of Applied Information Systems (IJAIS) – ISSN : 2249-0868, Vol.4, No. 8, pp.1-6.  E. M. Badr (2013): Odd Graceful Labeling of the revised friendship graphs, International Journal of Computer Applications, Vol.65, No.11, pp. 1-6.  E. M. Badr and M. Abdalaa (2013): Odd Graceful Labeling for the Subdivision of Double Triangles Graphs International Journal of Soft Computing, Mathematics and Control (IJSCMC) Vol. 2, No.1. M. I. Moussa and E. M. Badr (2013): A NEW PARALLEL ALGORITHM FOR COMPUTING MINIMUM SPANNING TREE, International Journal of Soft Computing, Mathematics and Control (IJSCMC) Vol. 2, No.2. R. M. Farouk , E. M. Badr and M. A. SayedElahl (2013): Recognition of cDNA micro-array image based on artificial neural network,, Journal of Computer Vision Approaches, Vol. 1, Issue 1, pp. 1-15. Badr and M. I.Moussa (2010) " On Jump- Critical Ordered Sets " 5th International Conference of Mathematics and Engineering physics (ICMEP-5), Egypt. M. I.Moussa and E. M. Badr (2009), Odd Graceful Labelings Of Crown Graphs, 1thInternational Conference Computer Science From Algorithms To Applications, Egypt. E. M. Badr (2009), Odd Graceful Graphs With Pendant Edges, 1thInternational Conference Computer Science From Algorithms To Applications, Egypt. E. M. Badr (2011), A Parallel Computation of the Graph-Theoretic Version of the Union-Closed Sets Conjecture, 2nd International Conference on Mathematics and Information Science, Sohag, Egypt. E. M. Badr (2011), Odd Graceful Labelings of Cyclic Snakes With Pendant Edges, 2nd International Conference on Mathematics and Information Science, Sohag, Egypt. E. M. Badr and M. I.Moussa (2010) ,Odd Graceful Labelings Of Cyclic Snakes, 1st International Conference on Mathematics and Statistics, Sharjah, U.A.E. Badr, E., Paparrizos, K., Samaras, N., Sifaleras, A. (2005) . On the basis inverse of the exterior point simplex algorithm. In Proc. of the 17th National Conference of Hellenic Operational Research Society (HELORS), 16-18, Rio, Greece, pp. 677-687, 2005. Badr, E., Paparrizos, K., Samaras, N., Baloukas, T. (2006)" Some computational results on the efficiency of an exterior point algorithm", In Proc. of the 18th National Conference of Hellenic Operartional Research Society (HELORS). Badr, E., Moussa M., Paparrizos, K., Samaras, N. (2006) "Some Computational results on MPI Parallel Implementation of Dense Simplex Method". In Proc. of World Academy of Science, Engineering and Technology (PWASET), Vol. 23, pp. 39-42, (presented in the Seventeenth International Conference on Computer & Information Science and Engineering ( CISE 2006), 8-10 December, Cairo, Egypt, 2006. Badr, E., Paparrizos, K., Samaras, N., Baloukas, T. (2005) " A web-based solver for the single source shortest path problem".18th Conference of Hellenic Operational Research Society (HELORS). E. M. Badr (2014) "On Fuzzy Exterior Point Simplex Method for Solving Linear Programming Problems with Fuzzy Numbers",7th International Conference on Mathematics and Engineering Physics (ICMEP-7),Military Technical College,Kobry Elkobbah, Cairo, Egypt, May 29-31,2014. E.M. Badr (2014), "On Odd Graceful Labeling of the Generalization of Cyclic Snakes", International Journal of Computer Applications (0975 – 8887) Volume 106 – No. 12, November 2014 E. M. Badr (2015) " On Graceful Labeling of the Generalization of Cyclic Snakes" Journal of Discrete Mathematical Sciences and Cryptography 18 (6), 773-783, 2015.[ISI Indxed : SJR 0.13] R. M. Farouk , E. M. Badr and M. A. SayedElahl (2014) "RECOGNITION OF CDNA MICROARRAY IMAGE USING FEEDFORWARD ARTIFICIAL NEURAL NETWORK " International Journal of Artificial Intelligence & Applications (IJAIA), Vol. 5, No. 5, September 2014 E. M. Badr and B. Mohamed (2015) ,"Generating Recursive Formulas for the Number of Spanning Trees in Cyclic Snakes Networks", 4nd International Conference on Mathematics and Information Science, 5-7Feb.2015,Zewail City of Science and Technology, Cairo, Egypt. M.I.Moussa and E. M. Badr (2016) Ladder and Subdivision of Ladder graphs with pendant edges are odd graceful, journal on application of graph theory in wirless Ad hoc networs and sensor networks (GRAPHS-HOC) Vol.8, No.1, March 2016 E. M. Badr and B. Mohamed (2017), Complexity of Linear and General Cyclic Snake Networks,International Journal of Mathematical Combinatorics, Vol.3(2017), 57-70 [ ISI Indexed: Impact Factor 1.743] M.I.Moussa and E. M. Badr (2018) "A Data Hiding Algorithm Based on DNA and Elliptic Curve Cryptosystems" Journal of Information Hiding and Multimedia Signal Processing , Volume 10, Number 3, September 2019 [ ISI Indexed: Impact Factor 1.61 ] Badr. E. M. and Moussa M. I. (2020) " An Upper Bound of Radio k-coloring Problem and its Integer Linear Programming Model", Wireless and Networks (published online:18 March 2019) [ ISI Indexed: Impact Factor 2.4 ] E. M. Badr and B. Mohamed (2018), A Combinatorial Approach for the Spanning Tree Entropy in Complex Network,International Journal of Mathematical Combinatorics, International J.Math. Combin. Vol.4(2018), 1-17[ ISI Indexed: Impact Factor 1.743] E. M. Badr and B. ohamed (2015) " Enumeration of the Number of Spanning Trees for the Subdivision Technique of Five New Classes of Graphs" Applied Mathematical Sciences, Vol. 9, 2015, no. 147, 7327 - 7334. [ISI Indexed: SJR 0.15] A Comparative Study between PSO and FA Algorithms for optimizing the underground water confined steady flow using a fuzzy approach (2nd International Conference on Mathematics, Statistics & Information Technology (2nd ICMSIT-2018) 18-20 Dec 2018, Tanta, Egypt.) Optimizing Support Vector Machine using Gray Wolf Optimizer algorithm for Breast Cancer detection (2nd International Conference on Mathematics, Statistics & Information Technology (2nd ICMSIT-2018) 18-20 Dec 2018, Tanta, Egypt.) MPI Parallel Cosine Simplex Algorithm (2nd International Conference on Mathematics, Statistics & Information Technology (2nd ICMSIT-2018) 18-20 Dec 2018, Tanta, Egypt.) E. M. Badr and B. Mohamed (2018)" Linear Algebra and Number of Spanning Trees" World Applied Sciences Journal 36 (7): 888-895, 2018. [ISI Indxed : SJR 0.16] Book Chapter: El-Sayed Badr, Mustafa Abdul Salam and Florentin Smarandache (2019)" Solving Neutrosophic Linear Programming Problems with Two-Phase Approach" In book: Neutrosophic Sets in Decision Analysis and Operations Research Publisher: IGI Global Dissmenator knowledge E. Badr, S. Almotairi, A. Eirokh, A. Abdel-Hay and B. Almutairi,(2020) "An Integer Linear Programming Model for Solving Radio Mean Labeling Problem," in IEEE Access, vol. 8, pp. 162343-162349, 2020, doi: 10.1109/ACCESS.2020.3021896. [ISI indexed: Impact Factor: 3.745] Elsayed Badr and Sultan Almotairi (2020) " On a Dual Direct Cosine Simplex Type Algorithm and Its Computational Behavior" Hindawi Mathematical Problems in Engineering Volume 2020, Article ID 7361092, 8 pages [ISI indexd: Impact Factor: 1.009] https://doi.org/10.1155/2020/7361092 Diaa Salama AbdELminaam, Abdulrhman M. Almansori, Mohamed Taha,Elsayed Badr (2020) " A deep facial recognition system using computational intelligent algorithms" PLoS ONE 15(12): e0242269. https://doi.org/10.1371/journal.pone.0242269 [ISI indexed: Impact Factor 2.942] Elsayed Badr, Mustafa Abdul Salam, Sultan Almotairi, Hagar Ahmed,(2021) "From Linear Programming Approach to Metaheuristic Approach: Scaling Techniques", Complexity, vol. 2021, Article ID 9384318, 10 pages, 2021.[ISI indexed: Impact Factor 2.462] Elsayed Badr; Sultan Almotairi; Mustafa Abdul Salam; Hagar Ahmed (2021) "New Sequential and Parallel Support Vector Machine with Grey Wolf Optimizer for Breast Cancer Diagnosis" Alexandria Engineering Journal, Available online 28 July 2021. [ISI indexed: Impact Factor 3.732]