Bombieri, Enrico, David Masser, and Umberto Zannier. 2009. “Intersecting a Plane With Algebraic Subgroups of Multiplicative Groups”. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE 7 (1):51-80. https://doi.org/10.2422/2036-2145.2008.1.02.