@article{DE_1980_16_8_a12,
     author = {G. A. Kamenskii and A. D. Myshkis and A. L. Skubachevskii},
     title = {On the minimum of a quadratic functional and on linear boundary value problems of elliptic type with deviating arguments},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1469--1473},
     publisher = {mathdoc},
     volume = {16},
     number = {8},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_8_a12/}
}