Maucieri, C., C. Nicoletto, G. Zanin, M. Birolo, G. Xiccato, P. Sambo, and M. Borin. “Nitrogen Budget in Recirculating Aquaponic Systems With Different Fish Stocking Density”. Italian Journal of Agronomy, vol. 15, no. 3, Sept. 2020, pp. 239-45, doi:10.4081/ija.2020.1639.