J. Andre constructed a skewaffine structure as a group space of a normally transitive group. In this paper his construction is used to describe the structure of the set of circles not passing through a point of a Laguerre plane. Sufficient conditions to ensure that this structure is a skewaffine plane are given.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-ba54-3-9, author = {Andrzej Matra\'s}, title = {A Construction of a Skewaffine Structure in Laguerre Geometry}, journal = {Bulletin of the Polish Academy of Sciences. Mathematics}, volume = {54}, year = {2006}, pages = {277-289}, zbl = {1111.51004}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ba54-3-9} }
Andrzej Matraś. A Construction of a Skewaffine Structure in Laguerre Geometry. Bulletin of the Polish Academy of Sciences. Mathematics, Tome 54 (2006) pp. 277-289. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-ba54-3-9/