@article{10_21136_CPM_1983_118159,
     author = {Novotn\'a, Jarmila},
     title = {A sharpening of discrete analogues of {Wirtinger's} inequality},
     journal = {\v{C}asopis pro p\v{e}stov\'an{\'\i} matematiky},
     pages = {70--77},
     publisher = {mathdoc},
     volume = {108},
     number = {1},
     year = {1983},
     doi = {10.21136/CPM.1983.118159},
     mrnumber = {694141},
     zbl = {0521.26008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CPM.1983.118159/}
}