S. Visetpotjanakit and  N. Nakkaew,  Rapid Method for Low Level 90Sr Determination in Seawater by Liquid Extraction Technique.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2018, vol. 138(6). 287 - 290
    [viewed 25 May 2022]. Available from: https://publications.waset.org/pdf/10009120.