@article{DOCMA_2013__18__a46,
     author = {Joyal, Andr\'e and Kock, Joachim},
     title = {Coherence for weak units},
     journal = {Documenta mathematica},
     pages = {71--110},
     publisher = {mathdoc},
     volume = {18},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DOCMA_2013__18__a46/}
}