Erdelyi, I., & Lange, R. (1977). Spectral decompositions on Banach spaces. Springer-Verlag.

Erdelyi, Ivan, and Ridgley Lange. Spectral Decompositions on Banach Spaces. Berlin ; New York: Springer-Verlag, 1977.

Erdelyi, Ivan, and Ridgley Lange. Spectral Decompositions on Banach Spaces. Springer-Verlag, 1977.