@article{DCG_1987__2_131020,
     author = {D.W. Barnette},
     title = {Generating {Closed} {2-Cell} {Embeddings} in the {Torus} and the {Projective} {Plane.}},
     journal = {Discrete & computational geometry},
     pages = {233--248},
     publisher = {mathdoc},
     volume = {2},
     year = {1987},
     zbl = {0614.51008},
     url = {http://geodesic.mathdoc.fr/item/DCG_1987__2_131020/}
}