@article{MM2_1977__20_154433,
     author = {J\"urgen Lehn},
     title = {Pr\"amessbare {Funktionen.}},
     journal = {Manuscripta mathematica},
     pages = {141--152},
     publisher = {mathdoc},
     volume = {20},
     year = {1977},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MM2_1977__20_154433/}
}