@article{10_2140_agt_2008_8_1855,
     author = {Fiore, Thomas M and Paoli, Simona and Pronk, Dorette},
     title = {Model structures on the category of small double categories},
     journal = {Algebraic and Geometric Topology},
     pages = {1855--1959},
     year = {2008},
     volume = {8},
     number = {4},
     doi = {10.2140/agt.2008.8.1855},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2008.8.1855/}
}