@article{DE_2004_40_5_a1,
     author = {V. I. Gromak and A. S. Zenchenko},
     title = {On the {Theory} of {Higher-Order} {Painlev\'e} {Equations}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {582--589},
     publisher = {mathdoc},
     volume = {40},
     number = {5},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2004_40_5_a1/}
}