1. Kevin Buzzard and Frank Calegari, A counterexample to the Gouvêa-Mazur conjecture, C. R. Math. Acad. Sci. Paris 338 (2004), no. 10, 751–753.[MR]
  2. Frank Calegari and Nathan M. Dunfield, Automorphic forms and rational homology 3-spheres, Geom. Topol. 10 (2006), 295–329 (electronic).[MR/arXiv]
  3. Frank Calegari and William A. Stein, Conjectures about discriminants of Hecke algebras of prime level, Algorithmic Number Theory, Lecture Notes in Comput. Sci., vol. 3076, Springer, Berlin, 2004, pp. 140–152.[MR]