HOAL

Blöschl, Günter, et al. "The hydrological open air laboratory (HOAL) in Petzenkirchen: A hypothesis-driven observatory." Hydrology and Earth System Sciences 20.1 (2016): 227-255., https://doi.org/10.5194/hess-20-227-2016;

M. Vreugdenhil et al., "Towards a high-density soil moisture network for the validation of SMAP in Petzenkirchen, Austria," 2013 IEEE International Geoscience and Remote Sensing Symposium - IGARSS, Melbourne, VIC, 2013, pp. 1865-1868, https://doi.org/10.1109/IGARSS.2013.6723166.;