@Article{gi-4-99-2015,
AUTHOR = {Kopf, A. and Freudenthal, T. and Ratmeyer, V. and Bergenthal, M. and Lange, M. and Fleischmann, T. and Hammerschmidt, S. and Seiter, C. and Wefer, G.},
TITLE = {Simple, affordable, and sustainable borehole observatories for complex monitoring objectives},
JOURNAL = {Geoscientific Instrumentation, Methods and Data Systems},
VOLUME = {4},
YEAR = {2015},
NUMBER = {1},
PAGES = {99--109},
URL = {https://gi.copernicus.org/articles/4/99/2015/},
DOI = {10.5194/gi-4-99-2015}
}