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- [1] A METHOD FOR OBTAINING BOUNDS ON EIGENVALUES BY SOLVING NONHOMOGENEOUS INTEGRAL EQUATIONS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1970, 17 (01): : 93 - &
- [10] BOUNDS FOR EIGENVALUES OF CERTAIN TRIDIAGONAL MATRICES JOURNAL OF THE SOCIETY FOR INDUSTRIAL AND APPLIED MATHEMATICS, 1963, 11 (02): : 281 - 290