1. L. E. Dickson, History of the theory of numbers, vol. 3, Washington, 1923.
2. \bysame, Linear groups, Leipzig, 1901.
3. Reflections on a finite approximation to Euclidean geometry. Physical and astronomical prospects;Järnefelt, G.;Ann. Acad. Sci. Fennicae Ser. A. I. Math.-Phys.,1951
4. On the relation of order in geometries over a Galois field;Kustaanheimo, Paul;Soc. Sci. Fenn. Comment. Phys.-Math.,1957
5. Sur les congruences des nombres eulériens et les coefficients différentiels des functions trigonométriques suivant un module premier;Lucas, E.;Bull. Soc. Math. France,1878