Duffin, R. J.; Shelly, E. P. Difference equations of polyharmonic type. (English) Zbl 0082.08701 Duke Math. J. 25, 209-238 (1958). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 11 Documents Keywords:ordinary differential equations PDFBibTeX XMLCite \textit{R. J. Duffin} and \textit{E. P. Shelly}, Duke Math. J. 25, 209--238 (1958; Zbl 0082.08701) Full Text: DOI