@article{ASNSP_1993_4_20_1_61_0,
     author = {Bombieri, Enrico},
     title = {Effective diophantine approximation on $\mathbb {G}_m$},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {61--89},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 20},
     number = {1},
     year = {1993},
     mrnumber = {1215999},
     zbl = {0774.11034},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1993_4_20_1_61_0/}
}