%0 Journal Article %A Du, Bo %T New results on stability of periodic solution for CNNs with proportional delays and $D$ operator %J Kybernetika %D 2019 %P 852-869 %V 55 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.14736/kyb-2019-5-0852/ %R 10.14736/kyb-2019-5-0852 %G en %F 10_14736_kyb_2019_5_0852