@article{JEMS_2015_17_9_a9,
     author = {David Masser and Umberto Zannier},
     title = {Torsion points on families of simple abelian surfaces and {Pell's} equation over polynomial rings (with an appendix by {E.} {V.} {Flynn)}},
     journal = {Journal of the European Mathematical Society},
     pages = {2379--2416},
     publisher = {mathdoc},
     volume = {17},
     number = {9},
     year = {2015},
     doi = {10.4171/jems/560},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/jems/560/}
}