Experts confirm that, since 2000, the availability of petroleum world wide has been constantly decreasing (see, for example, Jörg Schindler and Werner Zittel, ‘World wide trends in energy demands and availability of resources’, Ludwig-Bölkow-Systemtechnik GmbH, Ottobrunn, October 2000; Colin Campbell and Jean Laherre, ‘The end of cheap oil?’, March 1998; Basler Prognos Institut, Peter Hofer, Die ZEIT No 4, 29 October 1998; Ken Chew, IHS-Energy Group, Geneva; L.B.
Experter bekräftar att världstillgången på olja stadigt minskar sedan år 2000 (se t.ex. Jörg Schindler och Werner Zittel, Weltweite Entwicklung der Energinachfrage und der Ressourcenverfügbarkeit, Ludwig-Bölkow-Systemtechnik GmbH, Ottobrunn, oktober 2000; Colin Campbell och Jean Laherre, The end of cheap oil?, mars 1998; Basler Prognos Institut, Peter Hofer, Die ZEIT nr 4, 29 oktober 1998; Ken Chew, IHS-Energy Group, Geneve; L.B.not-set not-set