Sailaukhanuly, Y., Kenessov, B., Carlsen, L., & Kamysbayev, D. (2013). SPME GC/MS determination of organochlorine pesticides in water samples. Chemical Bulletin of Kazakh National University, 69(1), 9-16. https://doi.org/https://doi.org/10.15328/chemb_2013_19-16