%0 Journal Article
%T Control of an Activated Sludge Process using the Virtual Reference Approach
%A Jose David Rojas
%A Victor M. Alfaro
%A Ramon Vilanova
%J Lecture Notes in Engineering and Computer Science
%D 2011
%I Newswood and International Association of Engineers
%U http://www.iaeng.org/publication/IMECS2011/IMECS2011_pp902-907.pdf