@article{MAN_1975__217_162770,
     author = {Walter Borho and Rudolf Rentschler},
     title = {Oresche {Teilmengen} in {Einh\"ullenden} {Algebren.}},
     journal = {Mathematische Annalen},
     pages = {201--210},
     publisher = {mathdoc},
     volume = {217},
     year = {1975},
     zbl = {0297.17004},
     url = {http://geodesic.mathdoc.fr/item/MAN_1975__217_162770/}
}