Zvonimir Janko Tran van Trung A new biplane of order 9 with a small automorphism group. 305-309 1986 42 J. Comb. Theory, Ser. A 2 http://dx.doi.org/10.1016/0097-3165(86)90103-2 db/journals/jct/jcta42.html#JankoT86