1. V. N. Florovskaya, R. B. Zezin, L. I. Ovchinnikova, et al., Diagnostics of Organic Matters in the Magmatic and Hydrothermal Rocks and Minerals (Nauka, Moscow, 1968) [in Russian].
2. S. V. Ikorskii, V. A. Nivin, and V. A. Pripachkin, Geochemistry of Gases of Endogenous Rocks (Nauka, St. Petersburg, 1992) [in Russian].
3. V. A. Nivin, “Gas Concentrations in Minerals with Reference to the Problem of the Genesis of Hydrocarbon Gases in Rocks of the Khibiny and Lovozero Complexes,” Geokhimiya, No. 9, 976–992 (2002) [Geochem. Int. 40 (9), 883 (2002)].
4. I. F. Linde, “On Natural Gases in Rocks of the Khibiny Alkaline Massif,” Izv. Vyssh. Uchebn. Zaved., Geol. Razved., No. 9, 78–93 (1961).
5. I. A. Petersil’e, Geology and Geochemistry of Natural Gases and Disperse Bitumens of Some Geological Complexes of the Kola Peninsula (Nauka, Moscow, 1964) [in Russian].