@article{MZ_1982__179_173162,
     author = {Roland Schw\"anzl},
     title = {\"Aquivariante {2-Felder} auf {Mannigfaltigkeiten} mit {Involution.}},
     journal = {Mathematische Zeitschrift},
     pages = {493--506},
     publisher = {mathdoc},
     volume = {179},
     year = {1982},
     zbl = {0512.57009},
     url = {http://geodesic.mathdoc.fr/item/MZ_1982__179_173162/}
}