1. Column ’91,1991
2. The contact cell – a future generation of flotation machines;Amelunxen;Eng. Min. J.,1993
3. Ananthan, M.M., 2013. China Molybdenum Co Ltd Factsheet. .
4. Did column flotation cells ever realise their potential?;Barry Willis;MEI Blog,2010
5. Flotation of finest and ultra-finest size coal particles;Alizadeh;Aufbereitungs-Technik,1985