@article{MZ_1970__114_171301,
     author = {Ladislav Skula},
     title = {Divisorentheorie einer {Halbgruppe.}},
     journal = {Mathematische Zeitschrift},
     pages = {113--120},
     year = {1970},
     volume = {114},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MZ_1970__114_171301/}
}