Chomtee, B. and Borkowski, J. J. (2018) “Weigthed Design Optimality Criteria for Spherical Response Surface Designs”, CURRENT APPLIED SCIENCE AND TECHNOLOGY. Bangkok, Thailand, 5(1), pp. 226–238. available at: https://li01.tci-thaijo.org/index.php/cast/article/view/160760 (accessed: 21 September 2026).