1. The general problem of the motion of coupled rigid bodies about a fixed point;Leimanis,1965
2. On the integrability of certain problems in particle and rigid body dynamics;Yehia;J. Theoret. Appl. Mech.,1986
3. On certain two-dimensional conservative mechanical systems with a cubic second integral;Yehia;J. Phys. A: Math. Gen.,2002
4. New integrable systems with a quartic integral and new generalizations of Kovalevskaya's and Goriatchev's cases;Yehia;Regul. Chaotic Dyn.,2008
5. Integrable 2D time-irreversible systems with a cubic second integral;Yehia;Adv. Math. Phys.,2016