1. P. Kristensen, L. Mejlbo, and E. Thue Poulsen, Commun. Math. Phys.,1, No. 3 (1966).
2. S. V. Fomin, Usp. Mat. Nauk,23, No. 2 (1968).
3. N. N. Frolov, On the Dirichlet Problem for Elliptic Differential Equations with Infinite-Dimensional Operators, Author's Abstract of Candidate's Dissertation [in Russian], Voronezh (1970).
4. D. N. Dudin, Distributions or Generalized Measures on a Hilbert Space, Author's Abstract of Candidate's Dissertation [in Russian], Moscow (1971).
5. V. I. Averbukh, O. G. Smolyanov, and S. V. Fomin, Trudy Mosk. Matem. O-va,24 (1971).