@article{DE_1996_32_8_a2,
     author = {V. A. Erovenko},
     title = {On $L^p$-essential spectra of some classes of nonselfadjoint ordinary differential operators. {I.~Operators} with sufficiently smooth coefficients},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1024--1034},
     publisher = {mathdoc},
     volume = {32},
     number = {8},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1996_32_8_a2/}
}