Vo, N., T. Tran, Q. Bui, M. Nguyen, D. To, S. Lo, and T. Chau. “Determination of the Interface Between Insoluble Environments Using Gamma Scattering Technique”. Science & Technology Development Journal: Natural Sciences, Vol. 1, no. T4, Dec. 2017, pp. 48-55, doi:https://doi.org/10.32508/stdjns.v1iT4.480.