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@article{MZ_1973__132_171912, author = {Christoph Hering}, title = {On {Involutorial} {Elations} of {Projective} {Planes.}}, journal = {Mathematische Zeitschrift}, pages = {91--98}, publisher = {mathdoc}, volume = {132}, year = {1973}, zbl = {0272.50019}, url = {http://geodesic.mathdoc.fr/item/MZ_1973__132_171912/} }
Christoph Hering. On Involutorial Elations of Projective Planes.. Mathematische Zeitschrift, Tome 132 (1973), pp. 91-98. http://geodesic.mathdoc.fr/item/MZ_1973__132_171912/