%0 Journal Article %A Aleksander Grytczuk %T Ljunggren’s Diophantine problem connected with virus structure %J Annales mathematicae et informaticae %D 2006 %P 69-75 %V 33 %I mathdoc %U http://geodesic.mathdoc.fr/item/AMI_2006_33_a6/ %G en %F AMI_2006_33_a6