@article{TMF_2012_173_2_a4,
     author = {V. V. Kartak},
     title = {Solution of the~equivalence problem for {the~Painlev\'e} {IV} equation},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {245--267},
     publisher = {mathdoc},
     volume = {173},
     number = {2},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2012_173_2_a4/}
}