Goldberg, S.; Meir, A. Minimum moduli of ordinary differential operators. (English) Zbl 0216.17003 Proc. Lond. Math. Soc., III. Ser. 23, 1-15 (1971). Cited in 29 Documents MSC: 47E05 General theory of ordinary differential operators PDFBibTeX XMLCite \textit{S. Goldberg} and \textit{A. Meir}, Proc. Lond. Math. Soc. (3) 23, 1--15 (1971; Zbl 0216.17003) Full Text: DOI