Schoenbrunn, FR 2007, 'A Short History of Deep Cone Thickener Development', in R Jewell & AB Fourie (eds), Paste 2007: Proceedings of the Tenth International Seminar on Paste and Thickened Tailings, Australian Centre for Geomechanics, Perth, pp. 51-55.
(https://papers.acg.uwa.edu.au/p/702_05_Schoenbrunn/)