1. V. S. Vladimirov, Generalized Functions in Mathematical Physics [in Russian], Nauka, Moscow (1979).
2. I. M. Gel’fand and G. E. Shilov, Generalized Functions. Vol I: Properties and Operations [in Russian] Fizmatgiz, Moscow (1959); English transl.: Academic Press, New York etc. (1964).
3. I. M. Gel’fand and G. E. Shilov, Generalized Functions. Vol 2: Spaces of Fundamental and Generalized Functions [in Russian] Fizmatgiz, Moscow (1958); English transl.: Academic Press, New York etc. (1968).
4. Yu. A. Dubinskii, The Cauchy Problem in a Complex Domain [in Russian], MPEI Press, Moscow (1996).
5. Yu. V. Egorov and M. A. Shubin, Foundations of the Classical Theory of Partial Differential Equations [in Russian], VINITI, Moscow (1987); English transl.: Springer, Berlin (1998).