- Horkheimer, Max, 1895-1973 (8)
- Hegel, Georg Wilhelm Friedrich, 1770-1831 (5)
- Schmid Noerr, Gunzelin (5)
- Michel, Karl Markus, 1929- (4)
- Moldenhauer, Eva (4)
- Schmidt, Alfred (3)
- Heidegger, Martin, 1889-1976 (2)
- Heinz, Marion (1)
- Jaeschke, Walter (1)
- Kriegel, Peter (1)
- Nicolin, Friedhelm, 1926- (1)
- Ochwadt, Curd (1)
- Rill, Ingo (1)
- Schüler, Gisela (1)