Mažeikienė A, Valentukevičienė M. Removal of ammonium Ions from digested sludge fugate by using natural zeolite. JEELM [Internet]. 2016Aug.19 [cited 2024Dec.23];24(3):176-84. Available from: https://jau.vgtu.lt/index.php/JEELM/article/view/1745