@article{DE_2006_42_5_a6,
     author = {F. E. Lomovtsev},
     title = {A generalization of {Lions'} theory to first-order evolution differential equations with smooth operator coefficients: {I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {630--640},
     publisher = {mathdoc},
     volume = {42},
     number = {5},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2006_42_5_a6/}
}