Satrio, Satrio, et al. “Stable Isotopes and Hydrochemistry Approach for Determining the Salinization Pattern of Shallow Groundwater in Alluvium Deposit Semarang, Central Java”. Indonesian Journal on Geoscience, vol. 4, no. 1, Dec. 2016, pp. 1-10, doi:10.17014/ijog.4.1.1-10.