@article{DAN_1961_140_1_a3,
     author = {M. G. Gimadislamov},
     title = {The eigenfunction expansion of non-selfadjoint systems of second-order differential equations},
     journal = {Doklady Akademii Nauk},
     pages = {19--22},
     publisher = {mathdoc},
     volume = {140},
     number = {1},
     year = {1961},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1961_140_1_a3/}
}