@article{DE_1966_2_11_a8,
     author = {L. I. Kamynin},
     title = {On the smoothness of thermal potentials. {III}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1484--1501},
     publisher = {mathdoc},
     volume = {2},
     number = {11},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1966_2_11_a8/}
}