Shahinyan, S.G. 2001. STABILITY OF SYSTEMS WITH RETARDATION IN THE CASE OF SMALL INTEGRAL PERTURBATIONS. Proceedings of the YSU A: Physical and Mathematical Sciences. 35, 2 (195) (Jul. 2001), 27–31. DOI:https://doi.org/10.46991/PYSUA.2001.35.2.027.