APA

Zai-Ting L., Chao-Gang X., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B. & Chao-Gang X.Olefin production technology with adjustable propylene/ethylene ratio by catalytic cracking route. : .

Chicago

Zai-Ting Li, Chao-Gang Xie, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil) and Chao-Gang Xie.Olefin production technology with adjustable propylene/ethylene ratio by catalytic cracking route. : .

Harvard

Zai-Ting L., Chao-Gang X., World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro B. and Chao-Gang X.Olefin production technology with adjustable propylene/ethylene ratio by catalytic cracking route. : .

MLA

Zai-Ting Li, Chao-Gang Xie, World Petroleum Congress (17th. : 2002 sept. 1-5 : Río de Janeiro Brasil) and Chao-Gang Xie.: . .