@article{DE_1965_1_8_a1,
     author = {Yu. M. Filimonov},
     title = {Zum {Problem} der optimalen {Steuerung} eines mathematischen {Pendels}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1007--1015},
     publisher = {mathdoc},
     volume = {1},
     number = {8},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1965_1_8_a1/}
}