@article{VMUMM_1995_3_a13,
     author = {G. G. Amanzhaev},
     title = {On the closure of a non-zero invariant {Yablonsky's} class by operation of variables identification},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {76--79},
     publisher = {mathdoc},
     number = {3},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1995_3_a13/}
}