%0 Journal Article %A Mahlknecht, Giovanni %A Dignös, Anton %A Kozmina, Natalija %T Modeling and querying facts with period timestamps in data warehouses %J International Journal of Applied Mathematics and Computer Science %D 2019 %P 31-49 %V 29 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/IJAMCS_2019_29_1_a2/ %G en %F IJAMCS_2019_29_1_a2