@article{05256214,
title = {A universal property of the monoidal 2-category of cospans of ordinals and surjections.},
journal = {Theory and Applications of Categories [electronic only]},
volume = {18},
year = {2007},
pages = {631-653},
zbl = {1153.18007},
language = {en},
url = {http://dml.mathdoc.fr/item/05256214}
}
Menni, M.; Sabadini, N.; Walters, R.F.C. A universal property of the monoidal 2-category of cospans of ordinals and surjections.. Theory and Applications of Categories [electronic only], Tome 18 (2007) pp. 631-653. http://gdmltest.u-ga.fr/item/05256214/