... Journal of Mathematical Analysis and Ap-plications 318 (2006), no. 1, 63–76.[7] M. Kipnis and R. M. Nigmatulin, Stability of trinomial linear difference equations w ith two delays,Automation and ... the stability of solutions of certain linear differential equations with a laggingargument in the Banach space, Doklady Akademii Nauk SSSR 111 (1956), 770–773 (Russian).Mikhail Kipnis: Department ... Department of Mathematics, Chelyabinsk State Pedagogical University,69 Lenin Avenue, Chelyabinsk 454080, RussiaE-mail address: mkipnis@cspu.ruDarya Komissarova: Department of Mathematics, Southern...