Kozlovska-Kędziora, Justyna, and Egidijus Petraitis. “The Possibilities of Using Sapropel for Briquette Production”. Mokslas – Lietuvos Ateitis Science – Future of Lithuania, vol. 3, no. 5, Dec. 2011, pp. 24-30, https://doi.org/10.3846/mla.2011.082.