@article{DMGT_2012_32_1_a7,
     author = {Ho, Pak},
     title = {The projective plane crossing number of the circulant graph {C(3k;{1,k})}},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {91--108},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2012_32_1_a7/}
}