1. Chapter 23 - lichens as an indicator of climate and global change;Aptroot,2021
2. Mapping lichen diversity as an indicator of environmental quality;Asta,2002
3. Connection between emissions and concentrations of atmospheric pollutants;Babiy,2003
4. Lichens as Ecological Indicators to Track Atmospheric Changes: Future Challenges. Indicators and Surrogates of Biodiversity and Environmental Change;Branquinho,2015
5. Essential Biodiversity Change Indicators for Evaluating the Effects of Anthropocene in Ecosystems at a Global Scale, History, Philosophy and Theory of the Life Sciences;Branquinho,2019