@article{DE_1983_19_10_a6,
     author = {L. I. Kamynin and B. N. Khimchenko},
     title = {A countertheorem of {Giraud} type for a second-order parabolic equation with nonnegative characteristic form},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1700--1713},
     publisher = {mathdoc},
     volume = {19},
     number = {10},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_10_a6/}
}