1. Abou Zaki, N., Torabi Haghighi, A., Rossi, P. M., Tourian, M. J., & Kløve, B. (2019). Monitoring groundwater storage depletion using Gravity Recovery and Climate Experiment (GRACE) data in Bakhtegan Catchment Iran. Water, 11(7), 1–13.
2. Akale, A. T., Moges, M. A., Dagnew, D. C., Tilahun, S. A., & Steenhuis, T. S. (2018). Assessment of nitrate in wells and springs in the North Central Ethiopian Highlands. Water, 10, 476. https://doi.org/10.3390/w10040476.
3. Akhavan, S., Zare Abyaneh, H., & Bayat Varkeshi, M. (2014). A systematic review on nitrate concentration in water resources of Iran. Iranian Journal of Health & Environment, 7(2), 205–228.
4. Alighardashi, A., & Mehrani, M. J. (2017). Survey and zoning of nitrate-contaminated groundwater in Iran. Journal of Materials and Environmental Sciences, 8(10), 2785–2794.
5. Almasi, A., Shokri, R., Momenzadeh, R., Rezaei, S., Jamshidi, A., & Yazdizadeh, R. (2016). Distribution of groundwater nitrate in Dehloran, Iran: A case study using GIS. Journal of Advances in Environmental Health Research, 4(3), 155–160.