by Mendonça Filho, J.G., Sommer, M.G., Klepzig, M.C., Mendonça, J.O., Silva, T.F., Kern, M.L., Menezes, T.R., Jasper, A., Silva, M.C., Santos, L.G.C.
Published in International journal of coal geology (01.05.2013)

by Guatame, Clara, Rincón, Marco
Published in International journal of coal science & technology (01.10.2021)

by Nowak, Grzegorz J.
Published in International journal of coal geology (23.04.2004)

by Teichmüller, Marlies
Published in International journal of coal geology (01.06.1989)

by Guatame, Clara, Rincón, Marco
Published in International Journal of Coal Science & Technology (17.09.2020)

by Jelonek, I., Kruszewska, K.J., Filipiak, P.
Published in International journal of coal geology (01.08.2007)

by Teichmüller, M.
Published in International journal of coal geology (10.12.1990)