Semiaffine spaces.
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Van Maldeghem, Hendrik (2009)
The Electronic Journal of Combinatorics [electronic only]
Jan Jakóbowski (2005)
Bulletin of the Polish Academy of Sciences. Mathematics
There are three kinds of Benz planes: Möbius planes, Laguerre planes and Minkowski planes. A Minkowski plane satisfying an additional axiom is connected with some other structure called a nearaffine plane. We construct an analogous structure for a Laguerre plane. Moreover, our description is common for both cases.
Klaus Vedder, Henda Swart (1981)
Aequationes mathematicae
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