@article{DE_1984_20_11_a18,
     author = {V. M. Bruk},
     title = {Maximal dissipativity of a higher-order differential operator with an unbounded operator coefficient},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1986--1989},
     publisher = {mathdoc},
     volume = {20},
     number = {11},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1984_20_11_a18/}
}