McCoy, J. W. An extension of the concept of \(L_ n\) sets. (English) Zbl 0142.40203 Proc. Am. Math. Soc. 16, 177-180 (1965). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 3 Documents Keywords:topology PDFBibTeX XMLCite \textit{J. W. McCoy}, Proc. Am. Math. Soc. 16, 177--180 (1965; Zbl 0142.40203) Full Text: DOI