Zhang, Mengxue, Wenxin Wang, Luming Zhong, Fang Ji, and Dongxian He. 2024. “Bicarbonate Used As a Buffer for Controling Nutrient Solution PH Value During the Growth of Hydroponic Lettuce”. International Journal of Agricultural and Biological Engineering 17 (3). Beijing, China:59-67. https://www.ijabe.org/index.php/ijabe/article/view/8692.