Williams, R. F. Local properties of open mappings. (English) Zbl 0065.38201 Duke Math. J. 22, 339-345 (1955). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document Keywords:topology × Cite Format Result Cite Review PDF Full Text: DOI