%0 Book %T On the existence of a PBD(30, { 4, 5, 7, 8*}) %A Grüttmüller, Martin %A Streso, Katy %S Preprints aus dem Institut für Mathematik %D 2003 %C Germany; Rostock %G English %F 198791595X %O Martin Grüttmüller and Katy Streso %X In the present paper we will prove by an exhaustive search method that a pairwise balanced design on 30 points with blocks of size 4, 5, 7 and exactly one block of size 8 does not exist. %L 510 %9 Text %R 10.18453/rosdok_id00005918 %U https://purl.uni-rostock.de/rosdok/id00005918 %U https://doi.org/10.18453/rosdok_id00005918