From the Supplement to Guide Foreign Military Studies 1945-1954:
P-114b German Army Group Operations on the Eastern Front, 1941 - 45* Central Area. By General der Infanterie
Rudolf Hofmann; 1O vols; 1958. (Not translated)
P-114c German Army Group Operations on the Eastern Front, 1941 - 45, Southern Area. By General der Artillerie
F.W. Hauck; 8 vols; to be completed by December 1959- (Will not be translated)
Both of these should be of file as as paper copies at NARA. And look, one is 10 volumes and the other is 8!