1. Biochemical engineering and biotechnology handbook;Atkinson,1991
2. Processing of honey using polymeric microfiltration and ultrafiltration membranes;Barhate;Journal of Food Engineering,2003
3. Fouling of inorganic membranes by adsorption of proteins;Caric;Journal of Membrane Science,1999
4. Foss Tecator (1999). Application note. The determination of nitrogen according to kjeldahl using block digestion and steam distillation. 2400/24600 Kjetec® Auto Sampler System. User Manual 10009165. Rev1.1.
5. Handbook of downstream processing;Goldberg,1997