@article{AMI_2014_43_a6,
     author = {Tam\'as Glavosits and \'Arp\'ad Sz\'az},
     title = {Divisible and cancellable subsets of groupoids},
     journal = {Annales mathematicae et informaticae},
     pages = {67--91},
     publisher = {mathdoc},
     volume = {43},
     year = {2014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/AMI_2014_43_a6/}
}