%0 Journal Article %A Wituła, Roman %A Hetmaniok, Edyta %A Słota, Damian %T Families of Increasing Sequences Possessing the Harmonic Series Property %J Acta Universitatis Lodziensis. Folia Mathematica %D 2013 %V 18 %I mathdoc %U http://geodesic.mathdoc.fr/item/AULFM_2013_18_a3/ %G en %F AULFM_2013_18_a3