Šlajūtė, Eglė, and Aušra Mažeikienė. “Reduction in Ammonium Ions in Sludge Liquor”. Mokslas – Lietuvos Ateitis Science – Future of Lithuania, vol. 5, no. 4, Nov. 2013, pp. 461-5, https://doi.org/10.3846/mla.2013.72.