1. Bieker S, Cornel P (2009) Semicentralized supply and treatment systems, integrated infrastructure solutions for urban areas of tomorrow. In: Conference proceeding of the R’09 Twin World Congress, Nagoya, 14 Sept 2009
2. Bieker S, Schramm S (2010) Urban semicentralized supply and disposal innovations and challenges for Hanoi, Vietnam. Int J Sustain Dev 13(1/2):97–110
3. Bieker S, Schramm S, Wagner M, Cornel P (2008) Semicentralized supply and treatment systems—solutions for fast growing urban areas, Hanoi 2008. In: Proceeding of IWA conference on sanitation options in the Asia Pacific, Hanoi, pp 1–10
4. Bieker S, Cornel P, Wagner M (2010) Semicentralised supply and treatment systems: integrated infrastructure solutions for fast growing urban areas. Water Sci Technol 61(11):2905–2913
5. Böhm HR, Bieker S, Selz A (2006) Semi-centralized infrastructure systems: integrated systems for a sustainable development of fast growing urban areas. In: Conference proceeding of the 12th annual international sustainable development research conference, University of Hong Kong, ISBN 978-962-7589-27-3