R. Baer, Polarities in Finite Projective Planes. Bull. Amer. Math. Soc. 52, 77–93 (1946).
R. Baer, Projectivities with fixed points on every line of the plane. Bull. Amer. Math. Soc. 52, 273–286 (1946).
M. J. Ganley, Polarities in Translation Planes. Geometriae Dedicata 1, 103–116 (1972).
M. Hall, Projective Planes. Trans. Amer. Math. Soc. 54, 229–277 (1943).
D. R. Hughes and F. C. Piper, Projective Planes. Springer Verlag New York Heidelberg Berlin (1973).
D. E. Knuth, Finite Semifields and Projective Planes. J. Algebra 2, 182–217 (1965).
F. Piper, Polarities in the Hughes Plane. Bull. London Math. Soc. 2, 209–213 (1970).
M. Seib, Unitäre Polaritäten endlicher projektiver Ebenen. Arch. Math. 21, 103–112 (1970).
M. Seib, Orthogonal Polarities of Finite Projective Planes of Odd Order. Geometriae Dedicata 1, 179–181 (1972).
T. G. Ostrom and A. Wagner, On Projective and Affine Planes with Transitive Collineation Groups. Math. Zeitschrift 71, 113–123 (1959).
