Paulauskas, Leonas, and Robertas Klimas. “Investigation of Environmental Air Pollution and Its Change Assessment in Šiauliai”. Journal of Environmental Engineering and Landscape Management 13, no. 1 (March 31, 2005): 17-22. Accessed November 25, 2024. https://jcem.vgtu.lt/index.php/JEELM/article/view/8027.