(T.A.E.C., Çekmece Nuclear Research Center, 1964-12) TAEK-ÇNAEM; Ertek, Çetin
It is shown that the global method proposed by Özemre for reflected media is based on a tacit assumption which can not hold in general but which turns out to be a fair approximation. The comparison of this method with the two group and the modified one group theories suggests that it occupies a place between them.