1. Rockwool as a substrate in protected cultivation;Sonneveld,1988
2. Chemical sensors and instrumentation for horticulture;Albery,1988
3. The application of chemo- end biosensors for soilless cultures;Gieling,1989
4. Ion Sensitive Field Effect Transistors;van den Vlekkert,1992
5. A pH ISFET and an integrated pH-pressure sensor with back side contacts;van den Vlekkert,1988