1. Daniel Delbourgo and Tom Ward, Non-abelian congruences between L-values of elliptic curves, Ann. Inst. Fourier (Grenoble) 58 (2008), no. 3, 1023–1055.[MR/link]
  2. G. Everest and T. Ward, The canonical height of an algebraic point on an elliptic curve, New York J. Math. 6 (2000), 331–342 (electronic).[MR]