Switching of generalized quadrangles of order s and applications. Thas, J. A. — 2003 Advances in Geometry
A geometrical construction of the oval(s) associated with an α -flock. Brown, Matthew R.; Thas, J. A. — 2004 Advances in Geometry
Dual partial quadrangles embedded in P G ( 3 , q ) . De Clerck, F.; Durante, N.; Thas, J. A. — 2003 Advances in Geometry
Orthogonal, symplectic and unitary polar spaces sub-weakly embedded in projective space J. A. Thas; H. Van Maldeghem — 1996 Compositio Mathematica