Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1965_3_a7, author = {M. E. Drakhlin}, title = {Certain comparison principles for the {Riccati} differential equation}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {74--77}, publisher = {mathdoc}, number = {3}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1965_3_a7/} }
M. E. Drakhlin. Certain comparison principles for the Riccati differential equation. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 3 (1965), pp. 74-77. http://geodesic.mathdoc.fr/item/IVM_1965_3_a7/