Factorization of operators. Theory and applications
A survey of the development of Krein's factorization method and its applications is given.
English version (Springer): Ukrainian Mathematical Journal 46 (1994), no. 3, pp 304-317.
Citation Example: Sakhnovich L. A. Factorization of operators. Theory and applications // Ukr. Mat. Zh. - 1994. - 46, № 3. - pp. 293–304.