A flag transitive plane of order 49 and its translation complement. Narayana Rao, M.L.; Satyanarayana, K.; Arjuna Rao, K.M. — 1991 International Journal of Mathematics and Mathematical Sciences
Translation complements of C-planes: (IV). M.L. Narayana Rao; K. Kuppuswamy Rao — 1987 Manuscripta mathematica