@article{04163717, title = {Properties of }, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {14}, year = {1991}, pages = {203-204}, doi = {10.1155/S0161171291000194}, zbl = {0708.54031}, language = {en}, url = {http://dml.mathdoc.fr/item/04163717} }
Rose, David A. Properties of . International Journal of Mathematics and Mathematical Sciences, Tome 14 (1991) pp. 203-204. doi : 10.1155/S0161171291000194. http://gdmltest.u-ga.fr/item/04163717/