Baltrenas, Pranas, and Mindaugas Kvasauskas. “Experimental Investigation of Particle Concentration Using Mass and Optical Methods”. Journal of Environmental Engineering and Landscape Management 13, no. 2 (June 30, 2005): 57-64. Accessed November 23, 2024. https://transport.vgtu.lt/index.php/JEELM/article/view/8034.