1. Mihran Papikian, On the degree of modular parametrizations over function fields, J. Number Theory 97 (2002), no. 2, 317–349.[MR/doi]
  2. Mihran Papikian, On the variation of Tate-Shafarevich groups of elliptic curves over hyperelliptic curves, J. Number Theory 115 (2005), no. 2, 249–283.[MR]