@article{ZVMMF_1981_21_4_a8,
     author = {L. I. Kamynin and B. N. Khimchenko},
     title = {The strict extremum principle for a weakly parabolically connected, second-order operator},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {907--925},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1981_21_4_a8/}
}