The relativistic and direct solar radiation pressure effects on an axially symmetric spacecraft. I. The Hamiltonian and the canonical equations of motion. - M. I. El-Saftawy; Ahmed A. El-Enna (Appl. Math. Comput., 2002)

The joint effect of relativistic and direct solar radiation pressure on an axially symmetric spacecraft.: II. The solution and the elements of transformation. - Ahmed A. El-Enna; M. I. El-Saftawy (Appl. Math. Comput., 2003)