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Georgiadis, Evangelos; Callan, David; Hou, Qing-Hu Circular digraph walks, \(k\)-balanced strings, lattice paths and Chebychev polynomials. (English) Zbl 1180.05002 Electron. J. Comb. 15, No. 1, Research Paper R108, 11 p. (2008). MSC: 05A05 05A15 33C45 05C20 05C38 PDFBibTeX XMLCite \textit{E. Georgiadis} et al., Electron. J. Comb. 15, No. 1, Research Paper R108, 11 p. (2008; Zbl 1180.05002) Full Text: arXiv EuDML EMIS