by Sadovskaya, E.M., Bobin, A.S., Skazka, V.V.
Published in Chemical engineering journal (Lausanne, Switzerland : 1996) (15.09.2018)

by Belonosov, V.S., Skazka, V.V.
Published in Applied mathematics letters (2008)

by Skazka, V. V., Serdyukov, S. V., Erokhin, G. N., Serdyukov, A. S.
Published in Journal of mining science (2013)