Sturt, B.A.; Gautneb, H.; Heldal, T.; Nilss, L.P. (2002). "Industrial minerals associated with ultramafic rocks in Norway". In Scott P.W.; Bristow C.M. (eds.). Industrial Minerals and Extractive Industry Geology: Based on Papers Presented at the Combined 36th Forum on the Geology of Industrial Minerals and 11th Extractive Industry Geology Conference, Bath, England, 7th-12th May, 2000. Geological Society of London. p. 47. ISBN978-1-86239-099-7.
Hatzilazaridou, K. (2002). "A review of Greek industrial minerals". In Scott P.W.; Bristow C.M. (eds.). Industrial Minerals and Extractive Industry Geology: Based on Papers Presented at the Combined 36th Forum on the Geology of Industrial Minerals and 11th Extractive Industry Geology Conference, Bath, England, 7th-12th May, 2000. Geological Society of London. p. 115. ISBN978-1-86239-099-7.