1. M. Erb, P. Hubacher, H.P. Eicher, et al., Feldanalyse von WP-Anlagen, Bundesamt für Engergie, 2000.
2. Automated diagnostics Improving building system and equipment performance;Katipamula;Energy User News,1998
3. Air conditioning and heat pump operation cost savings by maintaining coil cleanliness;Krafthefer;ASHRAE Transactions,1987
4. P. Neuenschwander, Wämetauscher-Üerwachung durch Messen von Ein-und Ausgangsgrössen, Forschungsbericht Nr. 22, Laboratorium für Energiesysteme, ETH Zürich, Juris Verlag, 1996.
5. Statistical process control based fault detection of CHP units;Thomson;Control Engineering Practice,2000