@article{SJC_2008_2_4_a0,
     author = {Kovachev, Dimiter},
     title = {On some {Generalizations} of a {Class} of {Discrete} {Functions}},
     journal = {Serdica Journal of Computing},
     pages = {313--320},
     publisher = {mathdoc},
     volume = {2},
     number = {4},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SJC_2008_2_4_a0/}
}