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@article{DE_1987_23_8_a21, author = {N. V. Grigorenko}, title = {Logarithmic singularities of some classical linear differential equations}, journal = {Differencialʹnye uravneni\^a}, pages = {1455--1457}, publisher = {mathdoc}, volume = {23}, number = {8}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1987_23_8_a21/} }
N. V. Grigorenko. Logarithmic singularities of some classical linear differential equations. Differencialʹnye uravneniâ, Tome 23 (1987) no. 8, pp. 1455-1457. http://geodesic.mathdoc.fr/item/DE_1987_23_8_a21/