1. W.H. J. Stork, I.E. Maxwell, de Vries, A. F., C.H. Smit, L. Lundqvist & B. Schaper Paper presented at the Shell Catalyst Seminar, Tokyo, Japan, November 9, 1983
2. J.W. Gosselink, W.H. J. Stork & A.F. de Vries Paper presented at the Shell Catalyst Seminar, Tokyo, Japan, May 27–29, 1986
3. M. M. van Kessel, R.H. and van Dongen Paper presented at the Institute of Petroleum Economics and Refining Seminar, November 11, 1986
4. C.T. Adams, D.N. Washecheck, R.H. Slade & W.J. Daniels Paper AM-86–26 presented at the 1986 USA National Petroleum Refiners Association (NPRA) Annual Meeting, March 23–25, 1986 Los Angeles, USA.