%0 Journal Article %A Hakkaev, Sevdzhan %T Hamilton's instability index and applications to periodic waves %J Mathematics and Education in Mathematics %D 2021 %P 102-110 %V 50 %I mathdoc %U http://geodesic.mathdoc.fr/item/MEM_2021_50_a9/ %G en %F MEM_2021_50_a9