You can optionally request an invoice. For tax reasons, invoices are only available for residents of Germany.
The invoice can be issued either for using L-Rex in general, or for a specific study (if you are logged in).
If you need the invoice to contain specific details (e.g., because they are required
for reimbursement by your university), you can provide them in the comment field.
After submitting the form, you will receive a confirmation e-mail. We will get back to you as soon as possible with an invoice, usually within a few days. If you do not receive an e-mail, please contact us under email@example.com.