References
W. L. Edge, Conies and orthogonal projectivities in a finite plane. Canadian J. Math.8, 362–382 (1956).
G.Järnefelt, Reflections on a finite approximation to Euclidean geometry. Ann. Acad. Sci. Fennicae, Ser. A 196, (1951).
P. Kustaanheimo, A note on a finite approximation of the Euclidean plane geometry. Soc. Sci. Fennica, Commentationes phys.-math.XV, 19 (1950).
P. Kustaanheimo, On the relation of order in geometries over a Galois field. Soc. Sci. Fennica, Commentationes phys.-math.XX, 8 (1957).
P. Kustaanheimo, On the relation of congruence in finite geometries. Rend. Mat. e Appl.16, 286–291 (1957).
P. Kustaanheimo, On the relation of order in finite geometries. Rend. Mat. e Appl.16, 292–296 (1957).
B.Qvist, Some remarks concerning curves of the second degree in a finite plane. Ann. Acad. Sci. Fennicae, Ser. A 1134, (1952).
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Ostrom, T.G. Separation, betweenness, and congruence in planes over non-ordered fields. Arch. Math 10, 200–205 (1959). https://doi.org/10.1007/BF01240786
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DOI: https://doi.org/10.1007/BF01240786