@article{CRBIOL_2006__329_12_967_0,
     author = {Jacques Demongeot and Jean-Pierre Fran\c{c}oise},
     title = {Approximation for limit cycles and their isochrons},
     journal = {Comptes Rendus. Biologies},
     pages = {967--970},
     publisher = {Elsevier},
     volume = {329},
     number = {12},
     year = {2006},
     doi = {10.1016/j.crvi.2006.05.005},
     language = {en},
}