APA

Verlaan J. P., O'Connor P., Sonnemans H. W., Akzo Nobel Chemical, World Petroleum Congress (15th. : 1997 : Beijing), O'Connor P., Sonnemans H. W. & Akzo Nobel Chemical.Advances and trends in catalyst technology for molecular conversion of heavy feedstocks. : .

Chicago

Verlaan Jan P.J, O'Connor Paul, Sonnemans Hans W.M, Akzo Nobel Chemical, World Petroleum Congress (15th. : 1997 : Beijing), O'Connor Paul, Sonnemans Hans W.M and Akzo Nobel Chemical.Advances and trends in catalyst technology for molecular conversion of heavy feedstocks. : .

Harvard

Verlaan J. P., O'Connor P., Sonnemans H. W., Akzo Nobel Chemical, World Petroleum Congress (15th. : 1997 : Beijing), O'Connor P., Sonnemans H. W. and Akzo Nobel Chemical.Advances and trends in catalyst technology for molecular conversion of heavy feedstocks. : .

MLA

Verlaan Jan P.J, O'Connor Paul, Sonnemans Hans W.M, Akzo Nobel Chemical, World Petroleum Congress (15th. : 1997 : Beijing), O'Connor Paul, Sonnemans Hans W.M and Akzo Nobel Chemical.: . .