@article{FAA_1987_21_4_a14,
     author = {G. L. Rcheulishvili and M. V. Saveliev},
     title = {Multidimensional nonlinear systems related to the {Grassman} manifolds $BI$, $DI$},
     journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a},
     pages = {83--84},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {1987},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FAA_1987_21_4_a14/}
}