Faty, R. M., A. M. S. Youssef, and M. M. Youssef, "Reactions with Pyridinethiones: Synthesis of Thieno[2,3-b]- and Pyra-zolo[3,4-b]pyridine Derivatives", Biannual Conference on Chemistry (Chem. 02), Faculty of Science, Cairo University,, Cairo - Egypt, 4-7 March 2002.
Youssef, M. M., and A. M. S. Youssef, "Reactions with 2-Thioxo-1H-4,5,6,7-tetrahydropyrazolo[3,4-d]pyrimidin-4-one", 7th Ibn Sina International Conference on Pure and Applied Heterocyclic Chemistry, Alexandria - Egypt, 25-28 March 2000.
Elsabawy, K. M., W. F. Elhawary, Q. Mohsen, and M. M. Youssef, "Gamma-Irradiations Effect on Structural and Micro-Structural Parameters of Water Remediator HP-Mica-Cr-III-Clay Synthesized in Organic Solvent", Materials Science,, vol. 5, issue 4, pp. 1-14, 2009.
Youssef, M. M., "A One Pot Synthesis of Polysubstituted Pyrimidines. Facile Syntheses of Di- and Tricyclic Systems", Bulletin of Faculty of Science, Mansoura University, vol. 31, issue 1, pp. 17-25, 2004.
Youssef, M. M., "Thioxopyridinecarbonitriles as Precursors for Pyrazolopyridines and Pyridothienopyrimidines", Bulletin of Faculty of Science, Mansoura University, vol. 29, issue 2, pp. 17-28, 2002.
Youssef, M. M., and M. A. Al-Haiza, "6. Synthesis of some Pyrido[2`, 3`:3,4]pyrazolo[1,5-a]-pyrimidine, [1,5-a]1,3,5-triazine and [5,1-a]-1,2,4-triazine Derivatives", Egyptian Journal of Chemistry, vol. 43, issue 2, pp. 165-175, 2000.
Youssef, A. M. S., and M. M. Youssef, "Coupling and Nucleophilic Attack of Diazotized Pyrazolopyridine Derivatives", Indian Journal of Chemistry, vol. 37B, issue --, pp. 948-958, 1998.
Abdel-Samei M. Abdel-Fattah, S. M. Sherif, M. M. Youssef, and N. S. E. Ahmed, "4. 4-Chloro- and 4-Hydrazino- pyrimidines as Azolopyrimidine Precursors", Journal of Chemical Research (S), vol. --, issue --, pp. 412-413, 1994.
Hussain, S. M., S. M. Sherif, and M. M. Youssef, "New Synthesis of Polyfunctionally Substituted 2-mercaptopyridines and Fused Pyridines", Gazzetta Chimica Italiana, vol. 124, issue --, pp. 97-101, 1994.
Sherif, S. M., M. M. Youssef, K. M. Mobarak, and A. - S. M. Abdel-Fattah, "2. A Convenient Synthesis of Thiazolopyrimidines, Thiazolodipyrimidines and Heterocyclothiazolopyrimidines", Tetrahedron, vol. 49, issue 42, pp. 9561-9572, 1993.
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