Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="Sitorus, Berlian*" or (type exact bookEditor and editor="Sitorus, Berlian*") Add to list Journal Article A1 open access Technical and economic feasibility of gradual concentric chambers reactor for sewage treatment in developing countries Maria De Lourdes Mendoza Solorzano (UGent) , Marta Carballa, Berlian Sitorus, Jan Pieters (UGent) and Willy Verstraete (UGent) (2009) ELECTRONIC JOURNAL OF BIOTECHNOLOGY. 12(2).