Growing fish and plants using aquaponic, hydroponic and mixed technologiesAleksandr Kovrigin, Grigorii Pokhodnya, Yuriy Breslavets, Alexander Breslavets and Valerya ZhabinskayaE3S Web Conf., 282 (2021) 03028DOI: https://doi.org/10.1051/e3sconf/202128203028