| Author | Titles | | 1.
| Ludwig-Institut, (Oberhausen, Alemanha) | 1 | | 2.
| Ludwing, Emil | 1 | | 3.
| Ludwing Museum (Köln, Alemanha) | 1 | | 4.
| Ludwinski, Jerzy, 1930-2000 | 1 | | 5.
| Lueg, Konrad, 1939-1996 | 1 | | 6.
| Luelmo, Carla | 1 | | 7.
| Luelmo, José Maria | 2 | | 8.
| Luena, Ana | 1 | | 9.
| Luengo, Ana | 1 | | 10.
| Luengo, José A. | 1 |
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