Hashimoto, Hiroshi Transitive reduction of a nilpotent Boolean matrix. (English) Zbl 0549.05043 Discrete Appl. Math. 8, 51-61 (1984). Reviewer: J.M.S.Simões-Pereira MSC: 05C50 05C20 06B99 PDFBibTeX XMLCite \textit{H. Hashimoto}, Discrete Appl. Math. 8, 51--61 (1984; Zbl 0549.05043) Full Text: DOI
McCleary, Stephen H. The word problem in free normal valued lattice-ordered groups: A solution and practical shortcuts. (English) Zbl 0453.06012 Algebra Univers. 14, 317-348 (1982). MSC: 06F15 08A50 PDFBibTeX XMLCite \textit{S. H. McCleary}, Algebra Univers. 14, 317--348 (1982; Zbl 0453.06012) Full Text: DOI