Yan, Sherry H. F.; Ge, Huiyun; Zhang, Yaqiu On a refinement of Wilf-equivalence for permutations. (English) Zbl 1307.05004 Electron. J. Comb. 22, No. 1, Research Paper P1.20, 26 p. (2015). MSC: 05A05 05C30 20B30 × Cite Format Result Cite Review PDF Full Text: arXiv Link
Bloom, Jonathan A refinement of Wilf-equivalence for patterns of length 4. (English) Zbl 1283.05012 J. Comb. Theory, Ser. A 124, 166-177 (2014). MSC: 05A05 20B30 × Cite Format Result Cite Review PDF Full Text: DOI arXiv