@article{HHA_2003_5_1_a18,
     author = {Alain Rousseau},
     title = {Bicat\'egories mono{\"\i}dales et extensions de $gr$-cat\'egories},
     journal = {Homology, homotopy, and applications},
     pages = {437--547},
     publisher = {mathdoc},
     volume = {5},
     number = {1},
     year = {2003},
     doi = {10.4310/HHA.2003.v5.n1.a19},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4310/HHA.2003.v5.n1.a19/}
}