For citations:

Bazhenov A.N., Zatylkin P.A. Interval approach for spectral analysis. Use of recognizing functional to study of the solvability of a problem. Izmeritel`naya Tekhnika. 2019;(2):6-12. (In Russ.) https://doi.org/10.32446/0368-1025it.2019-2-6-12