Billstedt, Eva; Waern, Margda; Falk, Hanna; Duberstein, Paul; Östling, Svante; Hällström, Tore; Skoog, Ingmar . (2017). Time Trends in Murray's Psychogenic Needs over Three Decades in Swedish 75-Year-Olds. Gerontology, 63(1), 45–54.
doi:10.1159/000448113
