@article{DAN_1965_165_3_a5,
     author = {P. E. Sobolevskii},
     title = {Generalized solutions of first order differential equations in {Banach} space},
     journal = {Doklady Akademii Nauk},
     pages = {486--489},
     publisher = {mathdoc},
     volume = {165},
     number = {3},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1965_165_3_a5/}
}