Dreesen, B.; Poguntke, W.; Winkler, P. Comparability invariance of the fixed point property. (English) Zbl 0577.06005 Order 2, 269-274 (1985). Reviewer: B.Zelinka MSC: 06A06 05C99 PDFBibTeX XMLCite \textit{B. Dreesen} et al., Order 2, 269--274 (1985; Zbl 0577.06005)
Duffus, Dwight; Poguntke, Werner; Rival, Ivan Retracts and the fixed point problem for finite partially ordered sets. (English) Zbl 0441.06003 Can. Math. Bull. 23, 231-236 (1980). MSC: 06A06 06B05 PDFBibTeX XMLCite \textit{D. Duffus} et al., Can. Math. Bull. 23, 231--236 (1980; Zbl 0441.06003) Full Text: DOI