  The Spin Foam Model for the SO(4,C) BF theory is discussed. The Barrett-Crane
intertwiner for the SO(4,C) general relativity is systematically derived. The
SO(4,C) Barret-Crane interwiner is unique. The propagators of the SO(4,C)
Barrett-Crane model are discussed. The asymptotic limit of the SO(4,C) general
relativity is discussed. The asymptotic limit is controlled by the SO(4,C)
Regge calculus.
