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Melton, Austin; Schröder, Bernd S. W.; Strecker, George E. Connections. (English) Zbl 1522.06004 Brookes, Stephen (ed.) et al., Mathematical foundations of programming semantics. 7th international conference, Pittsburgh, PA, USA, March 25–28, 1991. Proceedings. Berlin: Springer. Lect. Notes Comput. Sci. 598, 492-506 (1992). MSC: 06A15 PDFBibTeX XMLCite \textit{A. Melton} et al., Lect. Notes Comput. Sci. 598, 492--506 (1992; Zbl 1522.06004) Full Text: DOI