Библиографическая ссылка:
Поляк Б.Т. L_1 problems in control and numerical methods for their solution / Preprint of the 3th International Conference «Optimization Methods and Applications» (OPTIMA-2012, Costa da Caparica, Portugal, 2012). Costa da Caparica: University of Evora, 2012. С. 220 http://www.cima.uevora.pt/optima2012/.