PhD studies can be pursued as as either full-time study or part-time study (also known as “combined” study as it offers a combination of face-to-face interaction and distance learning). The studies usually take 4 years (sometimes 3 years). There is a wide choice of accommodation options in the University's halls of residence; alternative accommodation is also available for parent students with families and their small children. Child care assistance to these students is also provided. PhD programmes are accessible to students with special needs, for whom the University operates a wide range of assistance services. Full-time doctoral students receive a scholarship, which is usually supplemented by other sources of income, e.g. by awards for participaton in grant projects or remuneration for teaching undergraduates.