4Chern J C, Chang Y L, Lee H C. Seismic safety analysis of Kukuan underground power cavern ~ J ]. Tunneling and Underground Space Technology, 2004,19 ( 5 ) : 516 -527.
5Haken H. Synergeties : From pattern formation to pattern analysis andpattern recognition [ J ]. International Journal of Bifurcation and Cha- os, 1994,4 (5) : 1069-1083.