Kazragis, Algimantas, Aušra Juknevičiūte, Albinas Gailius, and Elena Zalieckiene. 2004. “Utilization of Boon and Chaff for Manufacturing Lightweight Walling Materials”. Journal of Environmental Engineering and Landscape Management 12 (1):12-21. https://doi.org/10.3846/16486897.2004.9636810.