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Publications of Author

1. Nora Hartsfield, Gerhard Ringel
   Clean triangulations. [Citation Graph (0, 0)][DBLP]
   Combinatorica, 1991, v:11, n:2, pp:145-155 [Journal]
   
2. Brad Jackson, Gerhard Ringel
   Variations on Ringel's earth-moon problem. [Citation Graph (0, 0)][DBLP]
   Discrete Mathematics, 2000, v:211, n:, pp:233-242 [Journal]
   
3. Nora Hartsfield, Gerhard Ringel
   Minimal quadrangulations of orientable surfaces. [Citation Graph (0, 0)][DBLP]
   J. Comb. Theory, Ser. B, 1989, v:46, n:1, pp:84-95 [Journal]
   
4. Nora Hartsfield, Gerhard Ringel
   Minimal quadrangulations of nonorientable surfaces. [Citation Graph (0, 0)][DBLP]
   J. Comb. Theory, Ser. A, 1989, v:50, n:2, pp:186-195 [Journal]
   
5. Brad Jackson, Gerhard Ringel
   Heawood's empire problem. [Citation Graph (0, 0)][DBLP]
   J. Comb. Theory, Ser. B, 1985, v:38, n:2, pp:168-178 [Journal]
   
6. Richard K. Guy, Gerhard Ringel
   Triangular imbedding of K_n - K₆. [Citation Graph (0, 0)][DBLP]
   J. Comb. Theory, Ser. B, 1976, v:21, n:2, pp:140-145 [Journal]
   
7. Brad Jackson, Gerhard Ringel
   Maps of m-pires on the projective plane. [Citation Graph (0, 0)][DBLP]
   Discrete Mathematics, 1983, v:46, n:1, pp:15-20 [Journal]
   
8. Nora Hartsfield, Brad Jackson, Gerhard Ringel
   Hamilton surfaces for the complete even symmetric bipartite graph. [Citation Graph (0, 0)][DBLP]
   Discrete Mathematics, 1989, v:78, n:1-2, pp:89-94 [Journal]
   
9. Gerhard Ringel, Anna S. Lladó, Oriol Serra
   On the tree number of regular graphs. [Citation Graph (0, 0)][DBLP]
   Discrete Mathematics, 1997, v:165, n:, pp:587-595 [Journal]
   
10. Nora Hartsfield, Gerhard Ringel
    Quadrangular embeddings of the complete even k-partite graph. [Citation Graph (0, 0)][DBLP]
    Discrete Mathematics, 1990, v:81, n:1, pp:19-23 [Journal]
    
11. Hanfried Lenz, Gerhard Ringel
    A brief review on Egmont Köhler's mathematical work. [Citation Graph (0, 0)][DBLP]
    Discrete Mathematics, 1991, v:97, n:1-3, pp:3-16 [Journal]