Titchmarsh, E. C. (1962). Eigenfunction expansions: Associated with second-order differential equations (2. ed.). Clarendon Press.
Chicago-Zitierstil (17. Ausg.)Titchmarsh, Edward C. Eigenfunction Expansions: Associated with Second-order Differential Equations. 2. ed. Oxford: Clarendon Press, 1962.
MLA-Zitierstil (9. Ausg.)Titchmarsh, Edward C. Eigenfunction Expansions: Associated with Second-order Differential Equations. 2. ed. Clarendon Press, 1962.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.