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@article{DE_1986_22_6_a20, author = {D. L. Kudryavtsev}, title = {The monodromy group of a second-order linear differential equation}, journal = {Differencialʹnye uravneni\^a}, pages = {1068--1070}, publisher = {mathdoc}, volume = {22}, number = {6}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1986_22_6_a20/} }
D. L. Kudryavtsev. The monodromy group of a second-order linear differential equation. Differencialʹnye uravneniâ, Tome 22 (1986) no. 6, pp. 1068-1070. http://geodesic.mathdoc.fr/item/DE_1986_22_6_a20/