@article{MM2_1981__34_154759,
     author = {Arnold Jannssen},
     title = {Messbare {Mengen} von {Massen} und {Inhalten.}},
     journal = {Manuscripta mathematica},
     pages = {1--16},
     year = {1981},
     volume = {34},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MM2_1981__34_154759/}
}