@article{MM2_1970__3_154032,
     author = {Otto Haupt and Hermann K\"unneth},
     title = {\"Uber sogenannte entartete {Mengen} bei {Juelschen} {Problemen.}},
     journal = {Manuscripta mathematica},
     pages = {391--412},
     publisher = {mathdoc},
     volume = {3},
     year = {1970},
     zbl = {0203.24703},
     url = {http://geodesic.mathdoc.fr/item/MM2_1970__3_154032/}
}