Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

	1	M. Burstein and R. Pelavin, "Hierarchical Wire Routing," IEEE Trans. on Computer-aided Design, CAD-2, pp. 223-234, 1983
	2	M. Garey and D. Johnson, Computers and intractability, Bell Telephone Lab., Inc., 1979
	3	D. Heinbuch, CMOS3 Cell Library, Addison- Wesley Publishing Co., 1988
	4	A. Kahng, G. Robins, "iterative Steiner Tree Routing," the Proc. of ICCAD, Nov. 1990
	5	T.D. Lee and L.P. McNamee, "A Transistor Schematic Placement Expert," the Proc. of Int'l Conf. of industrial and Engineering Applications of Artificial Intelligence and Expert Systems, June 1991
	6	H. Levy, and D. Low, "A New Algorithm for Finding Small Cycle Cutsets," IBM Tech. Rep. IBM- G320-2721, june 1983
	7	Herbert Weinblatt, A New Search Algorithm for Finding the Simple Cycles of a Finite Directed Graph, Journal of the ACM (JACM), v.19 n.1, p.43-56, Jan. 1972  [doi>10.1145/321679.321684]

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