Li, S.-G., Xiao, Y.L., Liou, D.L., Chen, Y.Z., Ge, N.J., Zhang, Z.Q., Sun, S.S., Cong, B.L., Zhang, R.Y., Hart, S.R. and Wang, S.S. (1993) Collision of the North China and Yangtse Blocks and Formation of Coesite-Bearing Eclogites: Timing and Processes. Chemical Geology, 109, 89-111.