1. Zegwaard MI, Aartsen MJ, Cuijpers P, Grypdonck MH. (2011). Review: a conceptual model of perceived burden of informal caregivers for older persons with a severe functional psychiatric syndrome and concomitant problematic behaviour. Journal of Clinical Nursing 20(15-16):2233-58.
2. Zegwaard MI, Aartsen MJ, Cuijpers P, Grypdonck MH. (2011). Review: a conceptual model of perceived burden of informal caregivers for older persons with a severe functional psychiatric syndrome and concomitant problematic behaviour. Journal of Clinical Nursing 20(15-16):2233-58.
3. van Meijel B, van der Gaag M, Kahn RS, Grypdonck MH. (2003). Relapse prevention in patients with schizophrenia: the application of an intervention protocol in nursing practice. Archives of Psychiatric Nursing 17(4):165-72.