Huynh, C., Ly, T., Pham, T., Pham, T., Duong, M. and Nguyen, M. 2015. Development of multivariate calibration method for simultaneous determination of nickel, lead and zinc in tap water. Science and Technology Development Journal. 18, 2 (Jun. 2015), 145-151. DOI:https://doi.org/https://doi.org/10.32508/stdj.v18i2.1176.