1. S. Iskandarov and Z. A. Zhaparova, ‘‘Specific exponential stability of solutions to a fourth-order linear homogeneous Volterra integrodifferential equation,’’ Vestn. Balasagyn Kyrgyz Nat. Univ., Ser. 3, No. 4, 27–37 (2010) [in Russian].
2. Z. A. Zhaparova, ‘‘Specific asymptotic stability of solutions to a fourth-order linear homogeneous Volterra integrodifferential equation,’’ Issled. Integro-Differ. Uravn. 45, 25–33 (2012) [in Russian].
3. S. Iskandarov, ‘‘On a new variant of the method of nonstandard reduction to the system for a third-order linear Volterra integrodifferential equation,’’ Issled. Integro-Differ. Uravn. 37, 24–29 (2007) [in Russian].
4. S Iskandarov, Method of Weighting and Cutoff Functions and Asymptotic Properties of Solutions to Volterra Integrodifferential and Integral Equations (Ilim, Bishkek, 2002) [in Russian].
5. S. Iskandarov and D. N. Shabdanov, ‘‘Method of partial cutoff and boundedness of solutions to a first-order implicit Volterra integrodifferential equation,’’ Issled. Integro-Differ. Uravn. 33, 67–71 (2004) [in Russian].