Nawaz, Rab, Muhammad Arshad, Muhammad Shahzad Sarfraz, Muhammad Waseem Ashraf, Muhammad Umar Hayyat, Rashid Mahmood, and Preeda Parkpian. 2014. “Interactions Between Acidic (Al3+, Fe2+) and Basic (Ca2+, Mg2+) Cations in Oxisol and Ultisol under Acidification Induced by Simulated Acid Rain”. Asian Journal of Chemistry 26 (15):4794-4800. https://doi.org/10.14233/ajchem.2014.16229.