@article{RCM_1986__20_3-4_181771,
     author = {F.William Lawvere},
     title = {Taking {Categories} {Seriously.}},
     journal = {Revista colombiana de matematicas},
     pages = {147--178},
     publisher = {mathdoc},
     volume = {20},
     number = {3-4},
     year = {1986},
     zbl = {0648.18001},
     url = {http://geodesic.mathdoc.fr/item/RCM_1986__20_3-4_181771/}
}