1. Forms of gold concentrating in coals;Arbuzov,2003
2. Gold in high sulphur Indian coals;Baruah;Fuel,1998
3. Auriferous of the peat of Tomsk region;Bernatonis,1991
4. Geochemistry of plants and peat of the Great Vassyugan moor. Great Vassyugan moor;Bernatonis,2002
5. Geochemie Uhli;Bouška,1977