APA

Böning H., World Petroleum Congress (14th : 1994 : Stavanger), .Exploration and production under the impact of more stringent environmental requirements. : .

Chicago

Böning H, World Petroleum Congress (14th : 1994 : Stavanger), .Exploration and production under the impact of more stringent environmental requirements. : .

Harvard

Böning H., World Petroleum Congress (14th : 1994 : Stavanger), .Exploration and production under the impact of more stringent environmental requirements. : .

MLA

Böning H, World Petroleum Congress (14th : 1994 : Stavanger), .: . .