Smortsova, Tatiana 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, no. 1018 (April), 4-20. https://doi.org/10.26565/2221-5646-2012-1018-01.