Cita recomanada
MartÃnez i Puentes, Montserrat. (2006). A dynamic knowledge-based decision support system to handle solids separation problems in activated sludge systems: development and validation. Girona: Universitat. [Consulta: 25 Maig 2013]. Disponible a: http://www.tdx.cat/TDX-0303106-115645http://hdl.handle.net/10803/7792http://hdl.handle.net/10256/4455