Litmanovich Ol'ga Yul'evna

Publications in Math-Net.Ru

1. On multivalued differentials of piecewise-smooth functions
   
   Izv. Vyssh. Uchebn. Zaved. Mat., 1996, no. 11,  73–84
2. An analogue of a theorem of Keldysh for the multipoint de la Vallée-Poussin problem
   
   Dokl. Akad. Nauk, 326:4 (1992),  589–591