QL/OA = znfK′,

(14)

QV, QT, QP = OA (zs, zc, zd) fK′;

(15)

and with

mT = K, m/n = √ (z3 − z1) /2 = OA/k,

(16)

GT= G· kK = QHK,
2A 2AnOA OA

(17)

II = ½πf + QL + QHK = ½πf + HLK.
OA OA