Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1968_4_6_a4, author = {R. Gabasov}, title = {The optimality of singular controls}, journal = {Differencialʹnye uravneni\^a}, pages = {1000--1011}, publisher = {mathdoc}, volume = {4}, number = {6}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1968_4_6_a4/} }
R. Gabasov. The optimality of singular controls. Differencialʹnye uravneniâ, Tome 4 (1968) no. 6, pp. 1000-1011. http://geodesic.mathdoc.fr/item/DE_1968_4_6_a4/