Offin, Daniel C. A spectral theorem for reversible second order equations with periodic coefficients. (English) Zbl 0761.58040 Differ. Integral Equ. 5, No. 3, 615-629 (1992). Reviewer: M.Farkas (Budapest) MSC: 37A30 37J99 34C10 37G99 PDFBibTeX XMLCite \textit{D. C. Offin}, Differ. Integral Equ. 5, No. 3, 615--629 (1992; Zbl 0761.58040)
Khesin, B. A.; Shapiro, B. Z. Nondegenerate curves on \(S^ 2\) and orbit classification of the Zamolodchikov algebra. (English) Zbl 0849.17026 Commun. Math. Phys. 145, No. 2, 357-362 (1992). MSC: 17B68 37J35 37K10 PDFBibTeX XMLCite \textit{B. A. Khesin} and \textit{B. Z. Shapiro}, Commun. Math. Phys. 145, No. 2, 357--362 (1992; Zbl 0849.17026) Full Text: DOI
Burghelea, D.; Friedlander, L.; Kappeler, Th. Erratum: On the determinant of elliptic differential and finite difference operators in vector bundles over \(S^ 1\). (English) Zbl 0764.58032 Commun. Math. Phys. 150, No. 2, 431 (1992). MSC: 58J52 PDFBibTeX XMLCite \textit{D. Burghelea} et al., Commun. Math. Phys. 150, No. 2, 431 (1992; Zbl 0764.58032) Full Text: DOI