| Author | Popularity |
| Kleine, Christoph |
4 |
| Klose, K.J. (Prof. Dr.) |
4 |
| Klüßendorf, Niklot |
4 |
| Knapp, Albert |
4 |
| Kniphuysen, George Willem van |
4 |
| Kockskämper, Jens (Prof. Dr.) |
4 |
| Koolman, Jan (Prof. Dr.) |
4 |
| Krüger, Antonio (Prof. Dr.) |
4 |
| Krüger, Oliver |
4 |
| Kuckartz, Udo (Prof. Dr.) |
4 |
| Köhler, Ralf (Dr.) |
4 |
| Könnecke, Gustav |
4 |
| La Placette, Jean |
4 |
| Lead, Jane |
4 |
| Lichtenberg, Johann Conrad |
4 |
| Lingelbach, Klaus (Prof.) |
4 |
| Link, Hannes (Dr.) |
4 |
| Lohoff, Michael (Prof. Dr.) |
4 |
| Loogen, Rita (Prof. Dr.) |
4 |
| Maisner, Andrea (Prof. Dr.) |
4 |