| [NPS+18] Neumann E. et al. |
| [Str17] Streicher T. |
| [ES+16] Escardó M. et al. |
| [MS+15] Maschio S. et al. |
| [Str13] Streicher T. |
| [OS+08] Oliva P. et al. |
| [BS+03] Bénabou J. et al. |
| [BFJ+02] Bunge M. et al. |
| [ES+02] Escardó M. et al. |
| [HS+02] Hofmann M. et al. |
| [LS+02] Lietz P. et al. |
| [BFJ+00] Bunge M. et al. |
| [ES+99] Escardó M. et al. |
| [MRS+99] Marz M. et al. |
| [RS+99] Reus B. et al. |
| [Str99] Streicher T. |
| [Str99b] Streicher T. |
| [RS+97] Reus B. et al. |
| [AHS+96] Altenkirch T. et al. |
| [AHS+95] Altenkirch T. et al. |
| [Str89] Streicher T. |
| [BS+87] Broy M. et al. |