1.
Explicit "a Priori" Inequalities with Applications to Boundary Value Problems (Research note...
by Sigillito, V. G.
ISBN: 9780273010227
List Price: $16.95
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Estimating Eigenvalues with a Posteriori-a Priori Inequalities
by Kuttler, J. R., Sigillito, ...
ISBN: 9780273086994
List Price: $21.95