@article{TAC_1996_2_a1,
     author = {Michael Barr},
     title = {The {Chu} construction},
     journal = {Theory and applications of categories},
     pages = {17--35},
     publisher = {mathdoc},
     volume = {2},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_1996_2_a1/}
}