1. Chu, F. M. J. Seism. Soc. Japan (Zisin) 15–26 (1976).
2. Haicheng Earthquake Study Team, EOS (in the press).
3. Hsu, S. H. J. Seism. Soc. Japan (Zisin) 27–41 (1976).
4. Wang, T. et al. Acta geophys. sin. 3, 204–212 (1976).
5. Ambraseys, N. N. Tectonophysics 9, 143–165 (1970).