APA

Sogaard-Andersen P., Hommeltoft S. I., Sarup B., Refinery Technology Group, World Petroleum Congress (15th. : 1997 : Beijing), Hommeltoft S. I., Sarup B. & Refinery Technology Group.Fixed-bed alkylation - next generation. : .

Chicago

Sogaard-Andersen Peter, Hommeltoft Sven Ivar, Sarup Bent, Refinery Technology Group, World Petroleum Congress (15th. : 1997 : Beijing), Hommeltoft Sven Ivar, Sarup Bent and Refinery Technology Group.Fixed-bed alkylation - next generation. : .

Harvard

Sogaard-Andersen P., Hommeltoft S. I., Sarup B., Refinery Technology Group, World Petroleum Congress (15th. : 1997 : Beijing), Hommeltoft S. I., Sarup B. and Refinery Technology Group.Fixed-bed alkylation - next generation. : .

MLA

Sogaard-Andersen Peter, Hommeltoft Sven Ivar, Sarup Bent, Refinery Technology Group, World Petroleum Congress (15th. : 1997 : Beijing), Hommeltoft Sven Ivar, Sarup Bent and Refinery Technology Group.: . .