The post-Newtonian effects in the critical inclination problem in artificial satellite theory. - Fawzy Ahmed Abd El-Salam; M. K. Ahmed; Mohamad Radwan (Appl. Math. Comput., 2005)

The problem of close approach of two small masses in the field of massive oblate primary. - Mohamad Radwan; M. K. Ahmed; Fawzy Ahmed Abd El-Salam (Appl. Math. Comput., 2005)