1. Harmful chemical substances. Inorganic compounds of elements I—IV groups. Leningrad: Khimiya. 1988. 512 p. (Russia)
2. Harmful chemical substances. Inorganic compounds of elements V—VIII groups. Leningrad: Khimiya, 1989. 592 p. (Russia)
3. Russian gas encyclopedia. Moscow: Big Russian encyclopedia. 2004. 527 p. (Russia)
4. Lavrinenko I.A., Lavrinenko O.V. Accumulation by plants of heavy metals in the conditions of oil pollution // Siberian ecological journal. 1998. No. 3—4. P. 299—309. (Russia)
5. Korchina T.Ya., Korchin V. I., Kushnikova G. I., Yanin V. L. The characteristic of natural waters on the territory of Khanty-Mansi autonomous okrug // Ecology of Human. 2010. No. 8. P. 9—12. (Russia)