Further Comments On The Effects of Deformation on Isovector   Electromagnetic and Weak Transition Strengths
  We present a superior proof that the results for summed strength isovector dipole, spin dipole, and orbital dipole excitations are independent of deformations at the Delta N = 0 level. 
Shadow J.Q. Robinson, L. Zamick, A. Mekjian, N. Auerbach