%0 Journal Article %A Schmidt, Karl Michael %T On the genericity of nonvanishing instability intervals in periodic Dirac systems %J Annales de l'I.H.P. Physique théorique %D 1993 %P 315-326 %V 59 %N 3 %I Gauthier-Villars %U http://www.numdam.org/item/AIHPA_1993__59_3_315_0/ %G en %F AIHPA_1993__59_3_315_0