@article{CM_1996__104_1_41_0,
     author = {Li, Hua-Chieh},
     title = {$p$-adic dynamical systems and formal groups},
     journal = {Compositio Mathematica},
     pages = {41--54},
     publisher = {Kluwer Academic Publishers},
     volume = {104},
     number = {1},
     year = {1996},
     mrnumber = {1420709},
     zbl = {0873.58060},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1996__104_1_41_0/}
}