Kuchta, Małgorzata; Morayne, Michał; Niemiec, Jarosław Counting embeddings of a chain into a tree. (English) Zbl 1070.05010 Discrete Math. 297, No. 1-3, 49-59 (2005). MSC: 05A20 05C05 06A07 PDFBibTeX XMLCite \textit{M. Kuchta} et al., Discrete Math. 297, No. 1--3, 49--59 (2005; Zbl 1070.05010) Full Text: DOI
Morayne, Michał Partial-order analogue of the secretary problem: The binary tree case. (English) Zbl 0958.60041 Discrete Math. 184, No. 1-3, 165-181 (1998). MSC: 60G40 60C05 PDFBibTeX XMLCite \textit{M. Morayne}, Discrete Math. 184, No. 1--3, 165--181 (1998; Zbl 0958.60041) Full Text: DOI