1. P. Dembowski.Finite Geometries. Berlin-Heidelberg-New York: Springer-Verlag.
2. U. Dempwolff. Einige Translationsebenen der Ordnung 16 und Ihre Kollineationen (to appear).
3. D.A. Foulser, N.L. Johnson, T.G. Ostrom. Characterization of the Desarguesian planes of order q2 by SL(2,q) (to appear) Internat. J. Math.
4. Ch. Hering. On shears of translation planes. Abh. Hamburg Math. Sem. 27(1972), 258–268.
5. N.L. Johnson. The translation planes of order 16 which admit nonsolvable collineation groups (to appear).