@incollection{AST_1984__116__214_0,
     author = {Sacksteder, Richard},
     title = {Foliations and separation of variables},
     booktitle = {Structure transverse des feuilletages},
     series = {Ast\'erisque},
     pages = {214--221},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {116},
     year = {1984},
     mrnumber = {755172},
     zbl = {0553.58037},
     language = {en},
     url = {http://archive.numdam.org/item/AST_1984__116__214_0/}
}