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1979 | ||
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2 | Ira M. Gessel, Da-Lun Wang: Depth-First Search as a Combinatorial Correspondence. J. Comb. Theory, Ser. A 26(3): 308-313 (1979) | |
1977 | ||
1 | Da-Lun Wang: On Systems of Finite Sets with Constraints on Their Unions and Intersections. J. Comb. Theory, Ser. A 23(3): 344-348 (1977) |
1 | Ira M. Gessel | [2] |