Kurina, G. and Kalashnikova, M. 2023. Minimizing sequences for a linear-quadratic control problem with three-tempo variables under weak nonlinear perturbations. Bulletin of the Karaganda University. Mathematics Series. 109, 1 (Mar. 2023), 94–109. DOI:https://doi.org/10.31489/2023m1/94-109.