@article{CRMATH_2007__345_4_187_0,
     author = {Bertin, Jos\'e and Rosay, Fabrice},
     title = {P\'eriodicit\'e de {Kn\"orrer} \'etendue},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {187--191},
     publisher = {Elsevier},
     volume = {345},
     number = {4},
     year = {2007},
     doi = {10.1016/j.crma.2007.06.026},
     language = {fr},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2007.06.026/}
}