@article{CTGDC_1993__34_2_153_0, author = {Joyal, Andr\'e and Street, Ross}, title = {Pullbacks equivalent to pseudopullbacks}, journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques}, volume = {34}, year = {1993}, pages = {153-156}, mrnumber = {1223657}, zbl = {0780.18004}, language = {en}, url = {http://dml.mathdoc.fr/item/CTGDC_1993__34_2_153_0} }
Joyal, André; Street, Ross. Pullbacks equivalent to pseudopullbacks. Cahiers de Topologie et Géométrie Différentielle Catégoriques, Tome 34 (1993) pp. 153-156. http://gdmltest.u-ga.fr/item/CTGDC_1993__34_2_153_0/
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