@article{DE_1979_15_4_a7,
     author = {V. V. Ryndina},
     title = {On the equivalence between an $n$th order differential operator with a regular singular point and an {Euler} operator in the space $A_R$},
     journal = {Differencialʹnye uravneni\^a},
     pages = {636--649},
     publisher = {mathdoc},
     volume = {15},
     number = {4},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1979_15_4_a7/}
}