1. Modulation method of ultrasonic dispersion measurements (in Russian);Zverev;Papers USSR Acad Sci,1953
2. Modulation method of ultrasonic dispersion measurements (in Russian);Zverev;Acoust Phys,1956
3. Sletten CJ, Schell AC, Mack RB, Goggins WB, Blacksmith P, Radar phase comparison method and system for object recognition, US 3725917 (Apr. 1973). URL:https://www.google.com/patents/US3725917
4. Methods and Techniques of Radar Recognition (an English translation of a book originally published in Russian in 1984);Nebabin,1994
5. Phase characteristics of objects reflection in multiple frequency radar with multipath propagation (in Russian);Vorobiov;J Radioengineering, Moscow,1986