@article{TAC_2010_24_a14,
     author = {Claudio Pisani},
     title = {A logic for categories},
     journal = {Theory and applications of categories},
     pages = {394--417},
     publisher = {mathdoc},
     volume = {24},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2010_24_a14/}
}