@incollection {kuemmerlen1999, title = {Thermography to measure water relations of plant leaves}, volume = {3: Systems and Applications}, year = {1999}, pages = {763-781}, publisher = {Academic Press}, chapter = {36}, author = {Bernd K{\"u}mmerlen and Stefan Dauwe and Dominik Schmund and Ulrich Schurr and Bernd J{\"a}hne and Peter Gei{\ss}ler and Horst Hau{\ss}ecker} }