@article{CM_1995__98_3_269_0,
     author = {Silverman, Joseph H.},
     title = {The field of definition for dynamical systems on $\mathbb {P}^1$},
     journal = {Compositio Mathematica},
     pages = {269--304},
     publisher = {Kluwer Academic Publishers},
     volume = {98},
     number = {3},
     year = {1995},
     mrnumber = {1351830},
     zbl = {0849.11090},
     language = {en},
     url = {http://archive.numdam.org/item/CM_1995__98_3_269_0/}
}