@article{TAC_2019_34_a41,
     author = {Juan Orendain},
     title = {Free globularly generated double categories {I}},
     journal = {Theory and applications of categories},
     pages = {1343--1385},
     publisher = {mathdoc},
     volume = {34},
     year = {2019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2019_34_a41/}
}