A_ e 



rioZi 



-(^ 



X^ Ai Ai(^,) + B, Bi(^, ) 



dl 



<^ 



A9e'^2Z2 



B2e 



-r 



^ 



<h 



<> 



y\>C AnAi(^n) + Bn Bil^p! 



Ai(^n + l) 



Zn+1 



Figure 18. Multilayer linear liquid model. 



dn 



65 



