@article{NSJOM_1984__14__a13,
     author = {Stojakov\'c Zoran and Dudek Wieslaw A.},
     title = {Permutable n-groupoids},
     journal = {Novi Sad Journal of Mathematics},
     pages = {155-166},
     publisher = {mathdoc},
     volume = {14},
     year = {1984},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1984__14__a13/}
}