@article{VMJ_1999_1_3_a1,
     author = {M. S. Bichegkuev},
     title = {A weighted derivative and differential equations},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {5--17},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_1999_1_3_a1/}
}