1. H. Akahane, T. Furuno, H. Miyajima, T. Yoshikawa, S. Yamamoto, Rapid wood silicification in hot spring water: an explanation of silicification of wood during the Earth's history, Sedimentary Geology Vol. 169 (2004) 219 – 228.
2. M. Brebu, C. Vasile, Thermal degradation of lignin – a review, Cellulose chemistry and technology Vol. 44 (2010) 353-363.
3. B. Fojt, J. Hladíková, F. Kalenda: Zlaté Hory ve Slezsku - největší rudní revír v Jeseníkách. Část 2.: Geologie, Mineralogie, Geochemie stabilních izotopů (Zlaté Hory in Silesia - the largest mining district in Jeseníky Mountains. Part 2: Geology, Mineralogy, Geochemistry of stable isotopes), Acta Mus. Mor., Sci. geol. 86 (2001).
4. D. Horský, L. Reinprecht, Štúdia subfosilného dubového dreva (Studies of subfosil oak wood), VŠLD Zvolen, Zvolen, (1986).
5. K. W. Kim, Ch. J. Yoon, P. G. Kim, M. B. Lee, J. H. Lim, Fine structure and X-ray microanalysis of silicified woods from a Tertiary basin Pohang, Korea by scanning electron microscopy, Micron Vol. 40 (2009) 519 – 525.