APA

Höffer F., Steinschorn D., Zedlacher M., OMV (Viena), World Petroleum Congress (15th. : 1997 : Beijing), Steinschorn D., Zedlacher M. & OMV (Viena).Closing the gap the OMV scheduling system. : .

Chicago

Höffer Franz, Steinschorn Dietmar, Zedlacher Martin, OMV (Viena), World Petroleum Congress (15th. : 1997 : Beijing), Steinschorn Dietmar, Zedlacher Martin and OMV (Viena).Closing the gap the OMV scheduling system. : .

Harvard

Höffer F., Steinschorn D., Zedlacher M., OMV (Viena), World Petroleum Congress (15th. : 1997 : Beijing), Steinschorn D., Zedlacher M. and OMV (Viena).Closing the gap the OMV scheduling system. : .

MLA

Höffer Franz, Steinschorn Dietmar, Zedlacher Martin, OMV (Viena), World Petroleum Congress (15th. : 1997 : Beijing), Steinschorn Dietmar, Zedlacher Martin and OMV (Viena).: . .