| X. xu (Bonn) | V600 |
| P. Xanthouli (Heidelberg) | P887, P889, P892 |
| E. Xhepa (München) | V139, V142, V1024, P1225, P1602, P1608 |
| K. Xiao (Hannover) | P433, P436, P450, P452, P454, P513, P797, P814, P874, V1063, V1418, P1967 |
| X. Xiong (Köln) | V1043 |
| A. Xu (Würzburg) | V90, P1892 |
| C. M. Xu (Regensburg) | V1019 |
| J. Xu (Brisbane, AU) | P1555 |
| Q. Xu (Mannheim) | P490, V600 |