1. Benca, J.P., Duijnstee, I.A.P., and Looy, C.V., UV-B-induced forest sterility: Implications of ozone shield failure in Earth’s largest extinction, Sci. Adv., 2018, vol. 4, pp. 1–10.
2. Cherepanova, O.E. and Mishchikhina, Yu.D., Influence of environmental factors (temperature and air humidity) on the quality of Scotch pine pollen (Pinus sylvestris L.), Agrarn. Vestn. Urala, 2012, no. 7, pp. 72–73.
3. Dzyuba, O.F., Tetromorphic pollen grains in modern and paleopalinological spectra and some problems of palynostratigraphy, Neftegaz. Geol.: Teor. Prakt., 2007, no. 2, pp. 1–22.
4. Kalashnik, N.A, Characteristics of natural plantations of coniferous species of the Southern Urals according to cytogenetic parameters, Vestn. OGU, 2009, no. 6, pp. 157–160.
5. Kalashnik, N.A., Pollen anomalies in Scots pine under different environmental conditions, Byull. Bot. Sada Sarat. Gos. Univ., 2012, no. 10, pp. 46–52.