[1] U. Dempwolff A. Reifart: 
The classification of the translation planes of order 16, I. Geometriae Dedicate 15 (1983), 137 - 153 
MR 0737954[3] H. Luneburg: 
Translation Planes. Berlin - Heidelberg - New York 1980 
MR 0572791[4] T. G. Room P. B. Kirkpatrick: Miniquaternion Geometry. Cambridge, 1971