@article{TAC_2016_31_a7,
     author = {Val\'erian Even and Marino Gran and Andrea Montoli},
     title = {A characterization of central extensions in the variety of quandles},
     journal = {Theory and applications of categories},
     pages = {201--216},
     publisher = {mathdoc},
     volume = {31},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2016_31_a7/}
}