Nguyen, V. K., H. Q. Nguyen, D. D. Bui, T. T. H. Nguyen, D. T. Duong, T. H. Le, H. T. Nguyen, T. N. Pham, and V. T. Duong. “The Investigation of ²³⁹⁺²⁴⁰Pu, ⁹⁰Sr and ¹³⁷Cs Background Radiation Levels in Soil Samples in Some Provinces in the North of Vietnam”. Nuclear Science and Technology, vol. 14, no. 2, Sept. 2024, pp. 16-25, doi:10.53747/nst.v14i2.445.