@article{MOMA_1966__70_177319,
     author = {N.K. Stephanidis},
     title = {Strahlensysteme mit gemeinsamer {Mittenh\"ullfl\"ache.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {64--73},
     publisher = {mathdoc},
     volume = {70},
     year = {1966},
     zbl = {0141.18803},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1966__70_177319/}
}