| |
| * | 1992 | |
|---|---|---|
| 2 | Ljubo Marangunic: Biplanes (79, 13, 2) with Involutory Automorphism. J. Comb. Theory, Ser. A 61(1): 36-49 (1992) | |
| 1990 | ||
| 1 | EE | Ljubo Marangunic: Biplanes (56, 11, 2) with involutory collineation fixing 6 points. J. Comb. Theory, Ser. A 54(2): 149-163 (1990) |