Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DE_1966_2_4_a11, author = {S. T. Zavalishchin}, title = {On a certain optimal problem with a single switching}, journal = {Differencialʹnye uravneni\^a}, pages = {571--573}, publisher = {mathdoc}, volume = {2}, number = {4}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1966_2_4_a11/} }
S. T. Zavalishchin. On a certain optimal problem with a single switching. Differencialʹnye uravneniâ, Tome 2 (1966) no. 4, pp. 571-573. http://geodesic.mathdoc.fr/item/DE_1966_2_4_a11/