1. Generating the triangulations of the projective plane;Barnette;J. Combin. Theory Ser. B,1982
2. On the number of triangular embeddings of a labelled graph in the projective plane;Lawrencenko;Ukrain. Geom. Sb.,1989
3. Tables of all essentially different triangulations of the projective plane with some interesting graphs;Lawrencenko,1989
4. Re-embedding of projective-planar graphs;Negami;J. Combin. Theory Ser. B,1988