u. = - 



X,(n -i/X ) 



i , 2 ,2,2 



(n + X^} 



D = <b + + -^ 



i n ,^,, 2.^2 2Eh 

 12(l-v )<t) 



k^+n^4-(2-l/) r][l-a^(l+84>^)]U 



(64) 



:65) 



21 



G. = 



^ R^L^h(l+^ 



R-|<-'-i'>ll\ R-|(-'-i^ +-'ul+— ^^^-^i-— ^ 



1+|\L ^ JliL ^ J ij (U^)R%h l4' 



(-1) 



i-D^ 



Eh 



-'i^nte^)"^-^'^^^-3-^^^ 



.,,._,hX 



;66) 



and in which 



X, = 



iTTR 



i L -n 2^2 



1- 





= {[u4(=f-)^J(.-Wpj| 



-1 



(67) 



(68) 



;69) 



_ 2E(h/R)^ |/ p \^^ /mTT-^ 



2E(h/R) / P \ + /mTr\ 



[70) 



\[Rh 



(71) 



55 



