@article{CMH_1970__45_139424,
     author = {Heinz Leutwiler},
     title = {Beitr\"age zum potentialtheoretischen {Aspekt} des {Verheftungssatzes} von {A.D.} {Alexandrow.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {83--109},
     publisher = {mathdoc},
     volume = {45},
     year = {1970},
     zbl = {0204.42303},
     url = {http://geodesic.mathdoc.fr/item/CMH_1970__45_139424/}
}