%0 Journal Article %A Kalas, Josef %A Rebenda, Josef %T Asymptotic behaviour of a two-dimensional differential system with a nonconstant delay under the conditions of instability %J Mathematica Bohemica %D 2011 %P 215-224 %V 136 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/MB.2011.141584/ %R 10.21136/MB.2011.141584 %G en %F 10_21136_MB_2011_141584