@article{DCG_1990__5_2_131138,
     author = {D.W. Barnette},
     title = {Wv {Paths} on the {Torus.}},
     journal = {Discrete & computational geometry},
     pages = {603--608},
     publisher = {mathdoc},
     volume = {5},
     number = {2},
     year = {1990},
     zbl = {0711.52005},
     url = {http://geodesic.mathdoc.fr/item/DCG_1990__5_2_131138/}
}