1. Die bahnbewegungen in einem systeme von zwei korpern in dem falle, dass die massen veranderungen unterworfen sind;Gylden;Astron. Nachr.,1884
2. Works on the Mechanics of Variable Mass Bodies;Meshchersky,1949
3. The problem of two bodies with variable masses: the classification of various cases;Razbitnaja;Sov. Astron.,1985
4. Studies of some non-stationary problems of celestial mechanics by the method of transformations;Berkovich;Science,1975
5. L.M. Berkovich, Factorization and transformations of differential equations. Methods and applications, in: SPC Regular and chaotic dynamics, Moscow, 2002.