1. A.K. Rhodes, Oil& Gas Journal 89 (51) (1991) 33.
2. H.L. Hoffman, Hydrocarbon Processing (Feb. 1991)37.
3. S. Leiby, Oil & Gas Journal (12) (1992) 49.
4. A.S. Krishna, C.R. Hsieh, A.R. English, T.A. Pecoraro and C.W. Kuehler, Hydrocarbon Processing (Nov. 1991) 59.
5. G.D. Ulrich,A Guide to Chemical Engineering Process Design and Economics (Wiley, New York, 1984).