1. Confluent Hypergeometric Functions;Slater,1960
2. Eigenfunction Expansions Associated with Second-Order Differential Equations;Titchmarsh,1962
3. Fourier Transforms in the Complex Domain;Paley;Colloq. Publ., Amer. Math. Soc.,1934
4. Paley-Wiener-type theorem for a class of integral transforms arising from a singular Dirac system;Zayed;ZAA,2000