Chen, X. (2016) „ENTROPY DYNAMICS IN CONE PRODUCTION OF LONGLEAF PINE FORESTS IN THE SOUTHEASTERN UNITED STATES“, Mathematical and Computational Forestry & Natural-Resource Sciences (MCFNS), 8(2), str. 11–15 (5). Dostupno na: https://mcfns.com/index.php/Journal/article/view/8.8 (Pristupljeno: 4 studeni 2026).