1. M. Kh. Akhtyamov, Cenotaxonomy of Willow, Willow-Poplar, and Urema Forests of the Amur River Flood Plain (Dal’nauka, Vladivostok, 2001) [in Russian].
2. Yu. A. Pesenko, Principles and Methods of Numerical Analysis in Fauna Research (Nauka, Moscow, 1982) [in Russian].
3. B. I. Semkin, “On axiomatic approach for determining measures of disparity and quasidisparity in sets families,” in Information Methods in Control and Measuring Systems (Far East Sci. Center USSR Acad. Sci., Vladivostok, 1972), Vol. 1, pp. 23–26 [in Russian].
4. B. I. Semkin, “Descriptive sets and their application,” in Systems Research, Vol. 1: Complex Systems Analysis (Far East Sci. Center USSR Acad. Sci., Vladivostok, 1973), pp. 83–94 [in Russian].
5. B. I. Semkin, “Quantitative indices for estimating one-sided floristic boundaries which were offered by B. A. Yurtsev,” Bot. Zh. 92(4), 114–127 (2007).