%0 Journal Article %A Nguyên Thị Thiêu Hoa %T Rolle's theorem for certain differential operators and applications %J Trudy Matematicheskogo Instituta imeni V.A. Steklova %D 1989 %P 287-288 %V 44 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/RM_1989_44_2_a9/ %G en %F RM_1989_44_2_a9