Siudeja, Bartłomiej Sharp bounds for eigenvalues of triangles. (English) Zbl 1148.35056 Mich. Math. J. 55, No. 2, 243-254 (2007). Reviewer: Bodo Dittmar (Halle) MSC: 35P15 74K15 35-04 PDFBibTeX XMLCite \textit{B. Siudeja}, Mich. Math. J. 55, No. 2, 243--254 (2007; Zbl 1148.35056) Full Text: DOI arXiv
Hook, Stephen M. Bounds for the fundamental frequencies of an elastic medium. (English) Zbl 0754.35098 Mich. Math. J. 38, No. 1, 3-12 (1991). Reviewer: S.F.Sburlan (Bucureşti) MSC: 35P15 35J40 35J55 74B99 PDFBibTeX XMLCite \textit{S. M. Hook}, Mich. Math. J. 38, No. 1, 3--12 (1991; Zbl 0754.35098) Full Text: DOI