@article{TAC_1996_2_a2,
     author = {Sarah Whitehouse},
     title = {A {Counterexample} to a {Conjecture} of {Barr}},
     journal = {Theory and applications of categories},
     pages = {36--39},
     publisher = {mathdoc},
     volume = {2},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_1996_2_a2/}
}