Please either scp the publication into "/var/www/pmwiki/uploads/Publications" on Einstein or use "Attach" to add it to the Wiki. External links often get broken.
Enter it in the Link to PDF field. /var/www/pmwiki/uploads/Publications/X.pdf becomes
Note: When you add a new bachelor's thesis, make sure to add "Bachelor Thesis" into "Journal/Conference/Book Title" and "Bachelor Thesis, IAS" into "Notes". Replace "Bachelor" by "Master" or "PhD" for such theses.
Make sure to use Neumann, G.; Calandra, R.; Peters, J. and not any other name format!