prod By cheyvm22 2006 Ru: Rarog-Pilecka et al. 2007 Ru: Rarog-Pilecka et al. 2008 Ru: Rarog-Pilecka et al. 2011 Ru: Rarog-Pilecka et al. 2013 Ru: Karolewska et al. 2015 Nitruros: Bion et al.