@article{TAC_2011_25_a16,
     author = {Robert Par\'e},
     title = {Yoneda theory for double categories},
     journal = {Theory and applications of categories},
     pages = {436--489},
     year = {2011},
     volume = {25},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2011_25_a16/}
}