%0 Journal Article %A Novotná, Jarmila %T A sharpening of discrete analogues of Wirtinger's inequality %J Časopis pro pěstování matematiky %D 1983 %P 70-77 %V 108 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CPM.1983.118159/ %R 10.21136/CPM.1983.118159 %G en %F 10_21136_CPM_1983_118159