@article{BMMS_1998_21_1_a0,
     author = {Chong-Yun Chao and Bruce Montgomery},
     title = {Some
                          {Families} {ofS-Graphs}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {1998},
     volume = {21},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/BMMS_1998_21_1_a0/}
}