Smortsova, T.I. 2012. Mapping of the linear systems of the second order with two-dimensional control. Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics. 1018 (Apr. 2012), 4-20. DOI:https://doi.org/10.26565/2221-5646-2012-1018-01.