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@article{LJM_1999_3_a2, author = {B. M. Doubrov and B. P. Komrakov and T. Morimoto}, title = {Equivalence of holonomic differential equations}, journal = {Lobachevskii journal of mathematics}, pages = {39--71}, publisher = {mathdoc}, volume = {3}, year = {1999}, language = {en}, url = {http://geodesic.mathdoc.fr/item/LJM_1999_3_a2/} }
B. M. Doubrov; B. P. Komrakov; T. Morimoto. Equivalence of holonomic differential equations. Lobachevskii journal of mathematics, Tome 3 (1999), pp. 39-71. http://geodesic.mathdoc.fr/item/LJM_1999_3_a2/