Ehresmann, Charles Complétion des catégories sous-prélocales. (French) Zbl 0242.18013 C. R. Acad. Sci., Paris 259, 701-704 (1964). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 18D99 Categorical structures PDF BibTeX XML Cite \textit{C. Ehresmann}, C. R. Acad. Sci., Paris 259, 701--704 (1964; Zbl 0242.18013)