The doctoral student is guided by the supervisor and has to fulfil requirements given by the individual study plan. To complete the study programme, the student has to pass the doctoral state examination and defend the dissertation thesis. Deadlines are set in the individual study plan, which is approved by the supervisor. To be allowed to defend the dissertation thesis, the student has to pass the doctoral state examination, publish research article and meet all the duties set in the individual study plan. Successful students are awarded a Ph.D. degree.