Pourzabih, S., Arefnazari, M., Tajeri, B., & Delbari, A. "Investigating the Effectiveness of Ecotherapy on Insomnia and Agitation in Alzheimer's Patients", Medical Journal of Mashhad university of Medical Sciences, 64, 1, 2021, 2413-2422. doi: 10.22038/mjms.2021.18210