@article{DAN_1989_307_5_a6,
     author = {L. G. Mikhailov},
     title = {The quasilinear generalized {Cauchy{\textendash}Riemann} system with several independent variables},
     journal = {Doklady Akademii Nauk},
     pages = {1054--1059},
     year = {1989},
     volume = {307},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_307_5_a6/}
}