@article{DE_2004_40_8_a11,
     author = {A. T. Uss},
     title = {The {Homotopy} {Classification} of {Three-} and {Four-Dimensional} {Analogs} of the {Cauchy{\textendash}Riemann} {System}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1118--1125},
     year = {2004},
     volume = {40},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_8_a11/}
}