@article{MZ_1968__103_170910, author = {R.P. Burn}, title = {The {Coexistence} of {Involutory} {Elations} and {Homologies.}}, journal = {Mathematische Zeitschrift}, pages = {195--200}, publisher = {mathdoc}, volume = {103}, year = {1968}, zbl = {0161.40304}, url = {http://geodesic.mathdoc.fr/item/MZ_1968__103_170910/} }