@article{AM2_1969__2_182339,
     author = {W. MAIER and A. EFFENBERGER},
     title = {Additive {Inhaltsmasse} im positive gekr\"ummten {Raum}},
     journal = {Aequationes mathematicae},
     pages = {304--318},
     publisher = {mathdoc},
     volume = {2},
     year = {1969},
     zbl = {0175.49103},
     url = {http://geodesic.mathdoc.fr/item/AM2_1969__2_182339/}
}