Ter-Krikorov, A.M. and Shabunin, M.I., Kurs matematicheskogo analiza (A Course in Mathematical Analysis), Moscow: Nauka, 1988.
Zarubin, A.N., Uravneniya smeshannogo tipa s zapazdyvayushchim argumentom (Equations of Mixed Type with Retarded Argument), Orel, 1997.
Samko, S.G., Kilbas, A.A., and Marichev, O.I., Integraly i proizvodnye drobnogo poryadka i nekotorye ikh prilozheniya (Fractional Integrals and Derivatives and Some of Their Applications), Minsk: Nauka i Tekhnika, 1987.
Gakhov, F.D. and Cherskii, Yu.I., Uravneniya tipa svertki (Equations of Convolution Type), Moscow: Nauka, 1978.
Prudnikov, A.P., Brychkov, Yu.A., and Marichev, O.I., Integraly i ryady (Integrals and Series), Moscow: Nauka, 1981.