1. Baird, M. H. J.; Rice, R. G. 1975: Axial dispersion in large unbaffled columns. Chem. Eng. J., 9, 171–174
2. Beaton, W. I.; McDaniel, N. K.; McWhriter, W. E.; Petersen, R. D., Van Driesen, R. P. 1986: ‘Resid hydrocracker expands crude processing flexibility’, Oil Gas J. 7, 47–53
3. Deckwer, W. D.; Schumpe, A. 1987: Bubble columns — the state of the art and current trends. Int. Chem. Eng., 27, 405–422
4. D.Sc. Thesis;N. Devanathan,1991
5. Devanathan, N.; Moslemian, D.; Duduković, M. P. 1990: Flow mapping in bubble columns using CARPT. Chem. Eng. Sci., 45, 2285–2291