@article{DAN_1986_287_5_a15,
     author = {Ya. Z. Tsypkin},
     title = {Optimal direct adaptive control for systems with lag},
     journal = {Doklady Akademii Nauk},
     pages = {1092--1096},
     publisher = {mathdoc},
     volume = {287},
     number = {5},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1986_287_5_a15/}
}