Authors: Ismailov, ZI

Citation: Zi. Ismailov, On the normal solvability and the index of differential operators, DOKL MATH, 62(3), 2000, pp. 357-358

Authors: Ismailov, ZI Karatash, H

Citation: Zi. Ismailov et H. Karatash, Some necessary conditions for the normality of differential operators, DOKL MATH, 62(2), 2000, pp. 277-279

Authors: Maksudov, FG Ismailov, ZI

Citation: Fg. Maksudov et Zi. Ismailov, One necessary condition of normality for differential operators, DOKL AKAD N, 366(4), 1999, pp. 452-454