Rickert, N. W. A note on positive definite functions. (English) Zbl 0202.41001 Stud. Math. 36, 223-225 (1970). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page PDFBibTeX XMLCite \textit{N. W. Rickert}, Stud. Math. 36, 223--225 (1970; Zbl 0202.41001) Full Text: DOI EuDML