1. Agilent Technologies Inc., USA, 2009. MassHunter Workstation (G7200A) Operator’s Manual.
2. Allard, B., Bäckström, M., Häller, S., Karlsson, S., Panova, E., Grawunder, A., 2011. Water chemistry and trace metal concentrations in an acidic alum shale pit lake – effects of liming. In: Proc. International Mine Water Association Symposium – Mine Water – Managing the Challenges. Aachen, Germany, pp. 503–508.
3. Andersson, A., Dahlman, B., Gee, D.G., Snäll, S., 1985. The Scandinavian alum shales. Sveriges Geologiska Undersökning, SER. Ca Nr 56, Uppsala, Sweden, pp. 50.
4. Bäckström, M., 2010. Environmental impact from an alum shale deposit, Kvarntorp, Sweden – present and future scenarios. In Proc. International Mine Water Association Symposium – Mine Waterand Innovative Thinking. Sydney, Nova Scotia, Canada, pp. 551–554.
5. Liquid–liquid extraction of V(IV) from sulphate medium by Cyanex 301 dissolved in kerosene;Biswas;Int. J. Nonferrous Metall.,2013