@article{SM_1977_31_4_a0,
     author = {Yu. F. Korobeinik},
     title = {Compound operator equations in generalized derivatives and their applications to {Appell} sequences},
     journal = {Sbornik. Mathematics},
     pages = {425--443},
     year = {1977},
     volume = {31},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1977_31_4_a0/}
}