Commuting squares and the classification of finite depth inclusions of AFD type {$\rm III\sb łambda$} factors, {$łambda\in(0,1)$}

We give a new proof of the classification result due to Sorm Popa that a finite depth inclusion of AFD type III; factois N^Al, A^ (0, 1), with a common discrete decomposition (jV^CM00, 0} is classified, up to isomorphism, by the type II core A^ciM00 and the standard invariant of 6.