Dimitrova, Borislava, Neli Dimitrova, and Mikhail Krastanov. “Robust Regulation of an Anaerobic Wastewater Treatment Model”. Ann. Sofia Univ. Fac. Math. and Inf. 108 (December 12, 2021): 47–76. Accessed November 22, 2024. https://annual.uni-sofia.bg/index.php/fmi/article/view/548.