А. V. Panko and  Е. V. Ablets and  I. G. Kovzun and  М. А. Ilyashov,  Wasteless Solid-Phase Method for Conversion of Iron Ores Contaminated with Silicon and Phosphorus Compounds .   journal   = {International Journal of Environmental and Ecological Engineering}, [online]. World Academy of Science, Engineering and Technology.
    January 2014, vol. 85(1). 35 - 37
    [viewed 25 April 2024]. Available from: https://publications.waset.org/pdf/9997141.