%0 Journal Article %A Arscott, Felix M. %A Wright, G. P. %T Floquet theory for doubly-periodic differential equations %J Archivum mathematicum %D 1969 %P 111-124 %V 05 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/ARM_1969__5_3_a0/ %G en %F ARM_1969__5_3_a0