@phdthesis{ al-khaier2003, author = {Al-Khaier}, title = {Soil Salinity Detection Using Satellite Remotes Sensing}, publisher = {}, address = {International institute for Geo-information science and earth observation, Enschede, The Netherlands}, pages = {61}, volume = {}, number = {}, notes = {Master’s thesis}, year = {2003} } @misc{ idb, author = {Henrich, V. and Krauss, G. and Götze, C. and Sandow, C.}, title = {The IndexDatabase}, publisher = {}, address = {Bonn}, pages = {}, volume = {}, number = {}, year = {2011} }