@article{BMMS_2012_35_4_a2,
     author = {Kong Xiang-Zhi and Kar Ping Shum},
     title = {Regular {Cryptic} {Super} $r${-Ample} {Semigroups}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2012},
     volume = {35},
     number = {4},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2012_35_4_a2/}
}