@article{BMMS_2007_30_2_a10,
     author = {Adrian Riskin},
     title = {Cordial {Deficiency}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2007},
     volume = {30},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2007_30_2_a10/}
}