Smith, Heather; Székely, László; Wang, Hua; Yuan, Shuai On different “middle parts” of a tree. (English) Zbl 1393.05081 Electron. J. Comb. 25, No. 3, Research Paper P3.17, 32 p. (2018). MSC: 05C05 05C12 05C35 PDF BibTeX XML Cite \textit{H. Smith} et al., Electron. J. Comb. 25, No. 3, Research Paper P3.17, 32 p. (2018; Zbl 1393.05081) Full Text: Link
Andriantiana, Eric Ould Dadah; Wagner, Stephan; Wang, Hua Greedy trees, subtrees and antichains. (English) Zbl 1295.05076 Electron. J. Comb. 20, No. 3, Research Paper P28, 25 p. (2013). MSC: 05C05 05C35 PDF BibTeX XML Cite \textit{E. O. D. Andriantiana} et al., Electron. J. Comb. 20, No. 3, Research Paper P28, 25 p. (2013; Zbl 1295.05076) Full Text: Link
Székely, László; Wang, Hua Extremal values of ratios: distance problems vs. subtree problems in trees. (English) Zbl 1266.05012 Electron. J. Comb. 20, No. 1, Research Paper P67, 20 p. (2013). MSC: 05C05 05C12 05C35 92E10 PDF BibTeX XML Cite \textit{L. Székely} and \textit{H. Wang}, Electron. J. Comb. 20, No. 1, Research Paper P67, 20 p. (2013; Zbl 1266.05012) Full Text: Link