El Rhzaoui, G., Divakar, P. K., Crespo, A. and Tahiri, H. (2015): “Biomonitoring of air pollutants by using lichens (Evernia prunastri) in areas between Kenitra and Mohammedia cities in Morocco”., Lazaroa, 36, pp. 21–30. doi: https://doi.org/10.5209/rev_LAZA.2015.v36.49486.