Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1976_12_12_a20, author = {V. A. Srochko}, title = {On the optimality of singular controls in systems with after-effect}, journal = {Differencialʹnye uravneni\^a}, pages = {2275--2278}, publisher = {mathdoc}, volume = {12}, number = {12}, year = {1976}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1976_12_12_a20/} }
V. A. Srochko. On the optimality of singular controls in systems with after-effect. Differencialʹnye uravneniâ, Tome 12 (1976) no. 12, pp. 2275-2278. http://geodesic.mathdoc.fr/item/DE_1976_12_12_a20/