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- [2] VARIATIONAL PRINCIPLE FOR DERIVING UPPER AND LOWER BOUNDS OF EIGENVALUES JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL, 1979, 12 (03): : 325 - 328
- [3] UPPER AND LOWER BOUNDS TO EIGENVALUES FROM VARIATIONAL FUNCTIONALS PHYSICAL REVIEW A, 1987, 35 (11): : 4861 - 4863
- [7] COMPARISON OPERATORS FOR LOWER BOUNDS TO EIGENVALUES JOURNAL FUR DIE REINE UND ANGEWANDTE MATHEMATIK, 1966, 223 (AUG): : 142 - &
- [9] UPPER AND LOWER BOUNDS OF WKB EIGENVALUES PROGRESS OF THEORETICAL PHYSICS, 1976, 56 (02): : 669 - 670