Bombieri, E., Masser, D. and Zannier, U. 2009. Intersecting a plane with algebraic subgroups of multiplicative groups. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE. 7, 1 (May 2009), 51-80. DOI:https://doi.org/10.2422/2036-2145.2008.1.02.