@article{UM_2008_16_2_a6,
     author = {Jedin\'ak, Du\v{s}an},
     title = {S t\'u\v{z}bou po harm\'onii},
     journal = {U\v{c}itel matematiky},
     pages = {115--121},
     year = {2008},
     volume = {16},
     number = {2},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/item/UM_2008_16_2_a6/}
}