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Wolfgramm, Bettina; Seiler, Bruno; Kneubühler, Mathias; Liniger, Hanspeter (2007). Spatial Assessment of Erosion and its Impact on Soil Fertility in the Tajik Foothills. EARSeL eProceedings, 6(1), pp. 12-25.
Seiler, Bruno; Kneubühler, Mathias; Wolfgramm, Bettina; Itten, Klaus (2007). Quantitative assessment of soil parameters in Western Tajikistan using a soil spectral library approach. Proceedings of the ISPRS Working Group VII/1 Workshop ISPMSRS'07, XXXVI(7/C50), pp. 451-455. International Society for Photogrammery and Remote Sensing
Wolfgramm, Bettina; Seiler, Bruno; Guntli, David; Liniger, Hanspeter; Shepherd, Keith; Kneubühler, Mathias; Kellenberger, Tobias (2006). Combining soil spectral reflectance data and satellite imagery to assess impacts of land use on soil fertility in Tajikistan. In: Röder, Achim; Hill, Joachim (eds.) Proceedings of the 1st International Conference on Remote Sensing and Geoinformation Processing in the Assessment and Monitoring of Land Degradation and Desertification (pp. 611-617). Trier: Remote Sensing Department, University Trier