1. Ahues, M.: A class of strongly stable operator approximations. J. Austral. Math. Soc. Ser. B 28, 435–442 (1987)
2. Ahues, M., Largillier, A., Limaye, B.V.: Spectral Computations for Bounded Operators. Chapman and Hall/CRC, Boca Raton (2001)
3. Anselone, P.M.: Collectively Compact Operator Approximation Theory and Applications to Integral Equations. Prentice-Hall, Englewood Cliffs, N.J (1971)
4. Anselone, P.M., Moore, R.: Approximate solution of integral and operator equations. J. Math. Anal. Appl. 9, 268–277 (1964)
5. Atkinson, K.E.: The numerical solution of eigenvalue problem for compact integral operators. Trans. Amer. Math. Soc. 129, 458–465 (1967)