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	James R. Bitner , Gideon Ehrlich , Edward M. Reingold, Efficient generation of the binary reflected gray code and its applications, Communications of the ACM, v.19 n.9, p.517-521, Sept. 1976  [doi>10.1145/360336.360343]
	2	P. Bratley, Algorithm 306: permutations with repetitions, Communications of the ACM, v.10 n.7, p.450-451, July 1967  [doi>10.1145/363427.363473]
	3	Phillip J. Chase, Algorithm 382: combinations of M out of N objects [G6], Communications of the ACM, v.13 n.6, p.368, June 1970  [doi>10.1145/362384.362502]
	4	Phillip J. Chase, Algorithm 383: permutations of a set with repetitions [G6], Communications of the ACM, v.13 n.6, p.368-369, June 1970  [doi>10.1145/362384.362503]
	5	Gideon Ehrlich, Loopless Algorithms for Generating Permutations, Combinations, and Other Combinatorial Configurations, Journal of the ACM (JACM), v.20 n.3, p.500-513, July 1973  [doi>10.1145/321765.321781]
	6	Gideon Ehrlich, Algorithm 466: four combinatorial algorithm [G6], Communications of the ACM, v.16 n.11, p.690-691, Nov. 1973  [doi>10.1145/355611.362541]
	7	EVEN, S. Algorithmic Combinatorics. Macmillan, New York, 1973.
	8	Jerome Kurtzberg, Algorithm 94: Combination, Communications of the ACM, v.5 n.6, p.344, June 1962  [doi>10.1145/367766.368162]
	9	LEHMER, D.H. The machine tools of combinatorics. In Apphed Combinatorial Mathemattcs, E.F. Beckenback, Ed., Wiley, New York, 1964.
	10	C. N. Liu , D. T. Tang, Algorithm 452: enumerating combinations of m out of n objects [G6], Communications of the ACM, v.16 n.8, p.485, Aug. 1973  [doi>10.1145/355609.362322]
	11	Charles J. Mifsud, Algorithm 154: combination in lexicographical order, Communications of the ACM, v.6 n.3, p.103, March 1963  [doi>10.1145/366274.366309]
	12	NIJENHUIS, A., AND WILF, H.S Combinatorial Algorithms. Academic Press, New York, 1975.
	13	T. W. Sag, Algorithm 242: Permutations of a set with repetitions, Communications of the ACM, v.7 n.10, p.585, Oct. 1964  [doi>10.1145/364888.364916]
	14	TASG, D T, AND LIU, C N Dtstance-2 cyclic chaining of constant-weight codes. IEEE Trans. Comptrs. C-22, 2 (1973), 176-180.

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