@article{DE_1990_26_1_a20,
     author = {I. S. Lomov},
     title = {The basis property of root vectors of discontinuous second-order operators in a space of vector-functions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {160--163},
     publisher = {mathdoc},
     volume = {26},
     number = {1},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1990_26_1_a20/}
}