@article{MM_1997_9_8_a9,
     author = {D. M. Babanakov and I. R. Suslov},
     title = {The analytical solution to linear nonautonomous systems of ordinary differential equations},
     journal = {Matemati\v{c}eskoe modelirovanie},
     pages = {105--109},
     publisher = {mathdoc},
     volume = {9},
     number = {8},
     year = {1997},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MM_1997_9_8_a9/}
}