Ljunggren G., Phillips C.D, Sgadari A..  1997.  Comparisons of restraint use in nursing homes in eight countries. Age & Ageing. 26(SUPPL. 2):43-47.

Ribbe M.W, Ljunggren G., Steel K., Topinkova E., Hawes C., Ikegami N., Henrard J.C, Jonnson P.V.  1997.  Nursing homes in 10 nations: A comparison between countries and settings. Age & Ageing. 26(SUPPL. 2):3-12.