Brzeziński, Karol, Maciej MaŠ›lakowski, and PaweŠ‚ Liszewski. “Evaluation of the Volume Measurement Optical Method Suitability for Determining the Relative Compaction of Soils”. Civil Engineering Journal 4, no. 9 (September 30, 2018): 2052–2059. Accessed July 1, 2025. https://civilejournal.org/index.php/cej/article/view/1027.