@article{AM2_1973__9_136341,
     author = {N.S. MENDELSOHN and CHARLES LINDNER},
     title = {Construction of {Perpendicular} {Steiner.} {Quasigroups}},
     journal = {Aequationes mathematicae},
     pages = {150--156},
     publisher = {mathdoc},
     volume = {9},
     year = {1973},
     zbl = {0267.20067},
     url = {http://geodesic.mathdoc.fr/item/AM2_1973__9_136341/}
}