@article{10_1090_S0894_0347_1992_1149195_9,
     author = {Koll\~A{\textexclamdown}r, J\~A{\textexclamdown}nos and Mori, Shigefumi},
     title = {Classification of three-dimensional flips},
     journal = {Journal of the American Mathematical Society},
     pages = {533--703},
     publisher = {mathdoc},
     volume = {05},
     number = {3},
     year = {1992},
     doi = {10.1090/S0894-0347-1992-1149195-9},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S0894-0347-1992-1149195-9/}
}