1. Lecture Notes in Mathematics;A.S. Holevo,1988
2. Khalili, F.Ya.: On limit performance of quantum measuring devices. Vestnik MGU, ser. 3. 22, 37–42 (1982) (In Russian).
3. Barchielli, A.: Continuous observations in quantum mechanics: an application to gravitational-wave detectors. Phys. Rev. D. 32, 347–367 (1985).
4. Holevo, A.S.: Quantum estimation. In: Advances in statistical signal processing: theory and applications (H.V.Poor-ed.). JAI-Press 1987
5. Mensky, M.B.: The path group: measurement, fields, particles. Moscow: Nauka 1983 (In Russian)