@article{RSMUP_1971__46__417_0,
     author = {Heineken, Herman},
     title = {\"Uber gewisse perfekte supplementierbare {Subnormalteiler}},
     journal = {Rendiconti del Seminario Matematico della Universit\`a di Padova},
     pages = {417--420},
     publisher = {Seminario Matematico of the University of Padua},
     volume = {46},
     year = {1971},
     mrnumber = {308260},
     zbl = {0238.20042},
     language = {de},
     url = {http://www.numdam.org/item/RSMUP_1971__46__417_0/}
}