Grubliauskas, Raimondas. “In Memoriam: Prof. Pranas Baltrėnas (1940–2021)”. Journal of Environmental Engineering and Landscape Management 29, no. 2 (May 13, 2021): 72. Accessed February 19, 2026. https://journals.vilniustech.lt/index.php/JEELM/article/view/14771.