Doping Dependence of the muSR Lineshape in YBa_{2}Cu_{3}O_{y} Crystals:   Strong Evidence for y = 6.0 Antiferromagnetism in the Vortex Cores of y =   6.50
  This paper has been withdrawn by the authors, because of results obtained from a more exhaustive study of both YBa_2Cu_3O_y and La_{2-x}Sr_xCuO_4 (see cond-mat/0610051). 
J.E. Sonier, F.D. Callaghan, J.H. Brewer, W.N. Hardy, D.A. Bonn and R.   Liang