Adekunle, A., I. Tobit, and O. Gbemiga. “Effect of Ammonium on the Hydraulic Conductivity of Kaolin and Bentonite As Clay Liners”. ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA, Vol. 4, no. 2, Dec. 2020, pp. 100-11, doi:10.29114/ajtuv.vol4.iss2.177. Accessed 13 May 2025.