Seіfer, Dmitry, Abdrashіtov, Yagafar, Baкhonіna, Elena, Ovsyannікova, Inna  (2013) Ecological Monitoring Perspectives from Biotesting of Surface Waters: A Study of Pavlovsk Reservoir (Bashkortostan, Russia).  Formerly part of Journal of Environmental Science and Engineering, (2).  с. 621-628.  ISSN 1934-8932