@article{BMMS_2003_26_2_a5,
     author = {Moiz-ud-din Khan and Bashir Ahmad and Takashi Noiri},
     title = {On {SemiPerfect
}                        {Functions}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2003},
     volume = {26},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2003_26_2_a5/}
}