Grill E., Hermes R., Swoboda W., Uzarewicz C., Kostanjsek N., Stucki G..  2005.  ICF Core Set for geriatric patients in early post-acute rehabilitation facilities. Disabil Rehabil. 27:411-7.

Grill E., Mansmann U., Cieza A., Stucki G..  2007.  Assessing observer agreement when describing and classifying functioning with the International Classification of Functioning, Disability and Health. J Rehabil Med. 39:71-6.