“Selenium and Heavy Metal Levels in Vegetables and Tissues of Three Non-Migratory Birds Exposed to Soil, Water, and Aquatic Sediment Contaminated With Seleniferous Raša Coal”. Rudarsko-geološko-Naftni Zbornik, vol. 33, no. 3, Mar. 2018, pp. 53-62, https://doi.org/10.17794/rgn.2018.3.6.