L. 'équation, III-7) est obtenue en combinant l'équation (I-I 1) et les équàtions (A-I-Z), (A-1-3) et (A-1-4) , et en utilisant I'identité coS39, pp.4-6

L. En-outre and . Coefficient, anisotropie rs, déterminé à partir de l'équation (tr-56), s'exprime sous la forme : (n + t)2(n -r)-(k/3XB -tXB+3)+(z'l2/*)r[22-n(n -l), pp.2-2

. Io=, A -1)-(k / 3)(B-l)(B +t)+(z'l2/m)*[rt'(n -l)a-rto Èl

L. Enfin and . Paramèrcf, -àn(rr, donné par l'équation (tr-57), est égal à : (r^,' I ^)lzt-o a -zt-p qb cos2q-t 2 o] sin 2a z

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