@article{VMJ_2013_15_1_a4,
     author = {M. A. Nazaraliev and V. D. Beibalaev},
     title = {Dynamic systems described by two differential equations with derivatives of fractional order},
     journal = {Vladikavkazskij matemati\v{c}eskij \v{z}urnal},
     pages = {30--40},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMJ_2013_15_1_a4/}
}