Parfilova Oksana Vladimirovna

Publications in Math-Net.Ru

1. On $2$-fold completeness of the eigenfunctions for the strongly irregular quadratic pencil of differential operators of second order
   
   Izv. Saratov Univ. Math. Mech. Inform., 13:2(1) (2013),  14–22
2. On multiple completeness of the root functions of the pencils of differential operators with constant coefficients
   
   Izv. Saratov Univ. Math. Mech. Inform., 11:4 (2011),  45–58