@article{Sklyar_Fardigola_2002, place={Харків, Україна}, title={The Markov trigonometric moment problem in controllability problems for the wave equation on a half-axis}, volume={9}, url={http://mag.ilt.kharkiv.ua/index.php/mag/article/view/m09-0233e}, abstractNote={In this paper necessary and sufficient conditions of null-controllability and approximate null-controllability are obtained for the wave equation on a half-axis. Controls solving these problems are found explicitly. Moreover bang-bang controls solving the approximate null-controllability problem are constructed with the aid of solutions of the Markov trigonometric moment problem.}, number={2}, journal={Математическая физика, анализ, геометрия}, author={Sklyar, G.M. and Fardigola, L.V.}, year={2002}, month={Трав}, pages={233–242} }