Tarkhanov С., Pinaevskaya Е. ., Aganina Ю., and Pakhov А., “Variability of the Photosynthetic Pigment Complex in Spruce Trees with Different Seed Scale Shapes in the Northern Taiga of the Arkhangelsk Region”, Lesnoy Zhurnal, no. 4, pp. 96–109, Jul. 2026.