Authors: van Dobben, HF Wolterbeek, HT Wamelink, GWW Ter Braak, CJF

Citation: Hf. Van Dobben et al., Relationship between epiphytic lichens, trace elements and gaseous atmospheric pollutants, ENVIR POLLU, 112(2), 2001, pp. 163-169

Authors: Wamelink, GWW van Dobben, HF van der Eerden, LJM

Citation: Gww. Wamelink et al., Experimental calibration of Ellenberg's indicator value for nitrogen, ENVIR POLLU, 102, 1998, pp. 371-375