@article{MAN_1986__275_164145,
     author = {Kazuo Okamoto},
     title = {Studies on the {Painlev\'e} {Equations.} {III.} {Second} and {Fourth} {Painlev\'e} {Equations} {PII} and {PIV.}},
     journal = {Mathematische Annalen},
     pages = {221--256},
     publisher = {mathdoc},
     volume = {275},
     year = {1986},
     zbl = {0589.58008},
     url = {http://geodesic.mathdoc.fr/item/MAN_1986__275_164145/}
}