1. N. N. Luzin,Theory of Functions of a Real Variable [in Russian], Moscow (1948).
2. V. M. Manuilov, “On eigenvalues of a perturbed Schrödinger operator in a magnetic field with irrational magnetic flow,”Funkts. Anal. Prilozh.,28, 57–60 (1994).
3. A. Ya. Khelemskii,Banach and Polynormed Algebras. General Theory. Reperesentations. Homologies [in Russian], Nauka, Moscow (1989).
4. C. Anantharaman-Delaroche and J.-F. Havet, “On approximate factorizations of completely positive maps,”J. Funct. Anal.,90, 411–428 (1990).
5. S. Baaj and P. Julg, “Théorie bivariante de Kasparov et opérateurs non bornés dans lesC *-modules hilbertiens,”C. R. Acad. Sci. Paris, Sér. 1,296, 875–878 (1983).