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@article{MAN_1897__49_157861, author = {Emanuel Beke}, title = {Zur {Gruppentheorie} der homogenen linearen {Differentialgleichungen.}}, journal = {Mathematische Annalen}, pages = {573--580}, publisher = {mathdoc}, volume = {49}, year = {1897}, zbl = {28.0275.02}, url = {http://geodesic.mathdoc.fr/item/MAN_1897__49_157861/} }
Emanuel Beke. Zur Gruppentheorie der homogenen linearen Differentialgleichungen.. Mathematische Annalen, Tome 49 (1897), pp. 573-580. http://geodesic.mathdoc.fr/item/MAN_1897__49_157861/