APA

Friedrich K., Hacker V., World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) & Hacker V.The potencial for the production of hydrogen from renewable energy sources in Austria. : .

Chicago

Friedrich Kurt, Hacker Viktor, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) and Hacker Viktor.The potencial for the production of hydrogen from renewable energy sources in Austria. : .

Harvard

Friedrich K., Hacker V., World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) and Hacker V.The potencial for the production of hydrogen from renewable energy sources in Austria. : .

MLA

Friedrich Kurt, Hacker Viktor, World Energy Congress (18th. : 2001 oct. 21-25 : Buenos Aires) and Hacker Viktor.: . .