[1] Sibylla CRAMPE:
Angeordnete projektive Ebenen. Math. Zeitschr. 69 (1958), 435-462.
MR 0098345
[2] Reuben SANDLER:
Some theorems on the automorphism groups of planar ternary rings. Proc. Amer. Math. Soc. 15 (1964), 984-987.
MR 0180913
[3] Reuben SANDLER:
Pseudo planes and pseudo ternaries. Journ. Alg. 4 (1966), 300-316.
MR 0199786