Rajčević, N., B. Nikolić, and P. D. Marin. “Different Responses to Environmental Factors in Terpene Composition of Pinus Heldreichii and P. Peuce: Ecological and Chemotaxonomic Considerations”. Archives of Biological Sciences, vol. 71, no. 4, Dec. 2019, pp. 629-37, https://www.serbiosoc.org.rs/arch/index.php/abs/article/view/4458.