Tolong jelaskan mengenai 1980: Adamson Award, Swedia dari André Franquin

1985: Best Long Comic Strip at the Haxtur Awards, Spanyol, untuk QRN sur Bretzelburg''

1987: Grand Prix for the Graphic Arts at the Angoulême International Comics Festival

1996: Special Prize for outstanding life’s work at the Max & Moritz Prizes in Erlangen, Jerman