On some properties of the bibasic Humbert hypergeometric functions مؤلف البحث Qing-Bo Cai1, Ghazi S. Khammash, Shimaa I. Moustafa, Ayman Shehata مجلة البحث Applied Mathematics-A Journal of Chinese Universities. مؤلف البحث Ayman Shehata Mohammed Ahmed El-Shazly