A decision support tool for electric utility planning in liberalised energy markets under environmental constraints. - Mathias Göbelt; Wolf Fichtner; Martin Dreher; Martin Wietschel; Otto Rentz (IRMA Conference, 2000)

Long term planning of inter-company energy supply concepts. - Wolf Fichtner; Martin Wietschel; Otto Rentz (OR Spectr., 2002)