1. V. M. Fridland, The Nature of Northern Vietnam (Akad. Nauk SSSR, Moscow, 1961) [in Russian].
2. N. S. Chyong, “Geographical conditionality of the regional policy of Vietnam,” Candidate’s Dissertation in Geography (St. Petersburg, 2005).
3. V. I. Korobkin, Ecology (Feniks, Rostov-on-Don, 2010) [in Russian].
4. Ch. K. Nguyen, “Possible consequences of climate changes for Vietnam,” in VII All-Russ. Sci. Pract. Conf. “Research Initiative by Foreign Students and Postgraduates of Russian Higher Educational Institutions” (Tomsk. Politekh. Univ., Tomsk, 2014), pp. 257–261 [in Russian].
5. Weather and a detailed weather forecast from the Hydrometeorological Center of Russia. https://meteoinfo.ru/