Zuokaitė, Eglė, and Aušra Zigmontienė. “Research on Ammonia and Methane Gas Emission from Composting Sewage Sludge”. Mokslas – Lietuvos Ateitis Science – Future of Lithuania, vol. 1, no. 4, Apr. 2011, pp. 110-3, https://doi.org/10.3846/mla.2009.4.22.