Bekbaev Ural Djumaevich

Publications in Math-Net.Ru

1. Equivalence and invariants of second-order linear partial differential equations in two variables under a change of variables
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1999, no. 11,  3–10
2. On the equivalence and differential rational invariants of second-order linear partial differential equations of two variables under a change of variables
   
   Differ. Uravn., 34:6 (1998),  835–837
3. On equivalence and invariants of ordinary linear differential equations
   
   Differ. Uravn., 30:5 (1994),  911–912