Fine Structure Discussion of Parity-Nonconserving Neutron Scattering at   Epithermal Energies
  The large magnitude and the sign correlation effect in the parity non-conserving resonant scattering of epithermal neutrons from $^{232}$Th is discussed in terms of a non-collective $2p-1h$ local doorway model. General conclusions are drawn as to the probability of finding large parity violation effects in other regions of the periodic table. 
M. S. Hussein, A. K. Kerman and C-Y Lin