%0 Journal Article %A M. S. Belokursky %T Erugin’s problem on the existence of irregular solutions in one case of the linear system with nonzero mean of periodic coefficient %J Problemy fiziki, matematiki i tehniki %D 2015 %P 51-54 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/PFMT_2015_3_a8/ %G ru %F PFMT_2015_3_a8