10.18453/rosdok_id00005919 Gronau, Hans-Dietrich Hans-Dietrich Gronau http://d-nb.info/gnd/138612498 Kreher, Donald L. Donald L. Kreher Ling, Alan C.H. Alan C.H. Ling University of Rostock, Department of Mathematics 2002 510 Mathematics 2002 en https://purl.uni-rostock.de/rosdok/id00005919 urn:nbn:de:gbv:28-rosdok_id00005919-3 In this paper we study the spectrum of super–simple (v, 5, 2)–designs. We show that a super–simple (v, 5, 2)–design exists if and only if v ≡ 1 or 5 (mod 10), v ≠ 5,15, except possibly when v ∈ {75, 95, 115, 135, 195, 215, 231, 285, 365, 385, 515}