@article{10_4153_CMB_1986_079_9,
     author = {Barr, Michael},
     title = {Fuzzy {Set} {Theory} and {Topos} {Theory}},
     journal = {Canadian mathematical bulletin},
     pages = {501--508},
     year = {1986},
     volume = {29},
     number = {4},
     doi = {10.4153/CMB-1986-079-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1986-079-9/}
}