@article{AM2_1968__1_135984,
     author = {W. Maier and A. Effenberger},
     title = {Additive {Inhaltsmasse} im positiv gekr\"ummten {Raum.} {(Short} {Communication).}},
     journal = {Aequationes mathematicae},
     pages = {308--309},
     publisher = {mathdoc},
     volume = {1},
     year = {1968},
     zbl = {0175.49103},
     url = {http://geodesic.mathdoc.fr/item/AM2_1968__1_135984/}
}