Afisna, L. P., W. E. Juwana, I. Indarto, D. Deendarlianto, and F. M. Nugroho. “Performance of Porous-Venturi Microbubble Generator for Aeration Process”. Journal of Energy, Mechanical, Material, and Manufacturing Engineering, vol. 2, no. 2, Dec. 2017, pp. 73-80, doi:10.22219/jemmme.v2i2.5054.