@article{DAN_1960_131_6_a3,
     author = {I. M. Gel'fand and M. L. Tsetlin},
     title = {Continuous models of control systems},
     journal = {Doklady Akademii Nauk},
     pages = {1242--1245},
     publisher = {mathdoc},
     volume = {131},
     number = {6},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_6_a3/}
}