8Peter E Reed, Robert P Mahoner. Polymers containing phosphonic acid group for the treatment of red mud:US,5534235 [ P]. 1996 -07 -09.
9Harris Paul J, Mahoney Robert P. Hydroxymethyl diphosphonated polyacrylates for red mud treatment:US,5711923 [P]. 1998-01-27.
10Robert P Mahoney, Warrenville. High molecular weight polymers containing pendant salicylic acid group for clarifying bayer process liquors: US,2004/0024156AI [P]. 2004- 02 - 05.