The background to this is the more difficult conditions for doctoral students - due to the closure of libraries and archives as well as childcare during daycare closures. The extension must be agreed individually with the respective supervisors. Doctoral students who are funded by donors other than the university must please apply directly to the relevant institutions. For the extension of budget-funded positions, doctoral researchers must contact the respective supervisors and the dean's office concerned.
You can find more details in the FAQ on our Corona info page "Research".