@article{NSJOM_1993_23_2a_17,
     author = {Samard\v{z}iski Aleksandar and To\v{s}i\'c Ratko and Markovski Smile},
     title = {On sequences associated 

 with free (1,2)-groupoids},
     journal = {Novi Sad Journal of Mathematics},
     pages = {199-210},
     publisher = {mathdoc},
     volume = {23},
     number = {2},
     year = {1993},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1993_23_2a_17/}
}