Meda, Alessandro and Henkel, Jochen and Chang, Yue and Cornel, Peter Lazarova, Valentina and Choo, Kwang-Ho and Cornel, Peter (eds.) (2012):
Comparison of processes for greywater treatment for urban water reuse: energy consumption and footprint.
In: Water-Energy Interactions in Water Reuse, pp. 203-212, New York, IWA publishing, ISBN 9781843395416,
[Book Section]

Henkel, Jochen and Cornel, Peter and Wagner, Martin (2011):
Oxygen transfer in activated sludge ― new insights and potentials for cost saving.
In: Water Science & Technology, 63 (12), pp. 3034-3038. IWA Publishing, ISSN 0273-1223,
[Article]

Henkel, Jochen (2010):
Oxygen transfer phenomena in activated sludge.
In: Schriftenreihe IWAR ; 210, Darmstadt, Inst. IWAR, ISBN 978-3-940897-06-0,
[Book]