Harald Gropp On some Infinite Series of (r, 1)-Designs. [Citation Graph (0, 0)][DBLP] Discrete Applied Mathematics, 2000, v:99, n:1-3, pp:13-21 [Journal]
Harald Gropp Configurations between geometry and combinatorics. [Citation Graph (0, 0)][DBLP] Discrete Applied Mathematics, 2004, v:138, n:1-2, pp:79-88 [Journal]
Harald Gropp "Réseaux réguliers" or regular graphs--Georges Brunel as a French pioneer in graph theory. [Citation Graph (0, 0)][DBLP] Discrete Mathematics, 2004, v:276, n:1-3, pp:219-227 [Journal]
Harald Gropp The elementary Abelian Steiner systems S(2, 4, 49). [Citation Graph (0, 0)][DBLP] Discrete Mathematics, 1987, v:64, n:1, pp:87-90 [Journal]
Harald Gropp On configurations and the book of Sainte-Laguë. [Citation Graph (0, 0)][DBLP] Discrete Mathematics, 1998, v:191, n:1-3, pp:91-99 [Journal]
Harald Gropp Blocking set free configurations and their relations to digraphs and hypergraphs. [Citation Graph (0, 0)][DBLP] Discrete Mathematics, 1997, v:165, n:, pp:359-370 [Journal]
Harald Gropp Enumeration of regular graphs 100 years ago. [Citation Graph (0, 0)][DBLP] Discrete Mathematics, 1992, v:101, n:1-3, pp:73-85 [Journal]