@article{NSJOM_1985_15_1a_16,
     author = {Dudek 

 Wies{\l}aw A. and Stojakovi\'c Zoran},
     title = {On \ensuremath{\sigma}-permutable n-groupoids},
     journal = {Novi Sad Journal of Mathematics},
     pages = {189-198},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1985},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1985_15_1a_16/}
}