Butler, M. C. R.; Horrocks, G. Classes of extensions and resolutions. (English) Zbl 0099.25902 Philos. Trans. roy. Soc. London, Ser. A 254, 155-222 (1961). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 46 Documents Keywords:rings, modules, fields PDF BibTeX XML Cite \textit{M. C. R. Butler} and \textit{G. Horrocks}, Philos. Trans. R. Soc. Lond., Ser. A 254, 155--222 (1961; Zbl 0099.25902) Full Text: DOI OpenURL