@article{05198130, title = {Different structures in }, journal = {Novi Sad Journal of Mathematics}, volume = {35}, year = {2005}, pages = {113-121}, zbl = {1119.53011}, language = {en}, url = {http://dml.mathdoc.fr/item/05198130} }
Nikić, Jovanka. Different structures in . Novi Sad Journal of Mathematics, Tome 35 (2005) pp. 113-121. http://gdmltest.u-ga.fr/item/05198130/