กฤตสุนันท์กุล ช. “Biological Nitrogen Removal via Nitrite by Shortcut Nitrification-Denitrification Process in Sequencing Batch Biofilm Reactor”. Progress in Applied Science and Technology, vol. 8, no. 2, Dec. 2018, pp. 143-52, https://ph02.tci-thaijo.org/index.php/past/article/view/243035.