Publication: IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences Publication Date: 2004/12/01 Vol. E87-ANo. 12pp. 3301-3308 Type of Manuscript: Special Section PAPER (Special Section on VLSI Design and CAD Algorithms) Category: Analog Layout Keyword: device-level placement, rectangle packing, Sequence-Pair, directional convex, cluster-constraint,