1. Colour removal from kraft pulp mill waste water-state of art;Subrahmanyam;IPPTA, Souvenir,1975
2. Economics of waste water treatment in small paper mills;Subrahmanyam;IPPTA,1976
3. The mechanism of colour removal in the treatment of spent bleaching liquors with lime;Bennet;TAPPI,1971
4. Fungal decolorisation of kraft bleach plant effluents: Fate of the chromophoric material;Sundman;TAPPI,1981