@article{ADM_2016_22_2_a7,
     author = {Fausto Ongay and Ra\'ul Vel\'asquez and Luis Alberto Wills-Toro},
     title = {Normal subdigroups and the isomorphism theorems for digroups},
     journal = {Algebra and discrete mathematics},
     pages = {262--283},
     publisher = {mathdoc},
     volume = {22},
     number = {2},
     year = {2016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2016_22_2_a7/}
}