@article{DAN_1964_154_1_a2,
     author = {V. S. Vinogradov},
     title = {An analogue of the {Cauchy--Riemann} system in four-dimensional space},
     journal = {Doklady Akademii Nauk},
     pages = {16--19},
     publisher = {mathdoc},
     volume = {154},
     number = {1},
     year = {1964},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1964_154_1_a2/}
}