@article{10_4064_fm_57_2_195_203, author = {J. Boland}, title = {Embedding of graphs in the projective plane}, journal = {Fundamenta Mathematicae}, pages = {195--203}, publisher = {mathdoc}, volume = {57}, number = {2}, year = {1965}, doi = {10.4064/fm-57-2-195-203}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-57-2-195-203/} }