@article{SJIM_2011_14_2_a13,
     author = {Yu. A. Chirkunov},
     title = {Systems of linear differential equations with non-$x$-autonomous basic {Lie} algebra},
     journal = {Sibirskij \v{z}urnal industrialʹnoj matematiki},
     pages = {112--123},
     publisher = {mathdoc},
     volume = {14},
     number = {2},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJIM_2011_14_2_a13/}
}