The Geriatric Depression Scale: a review of its development and utility
Screening performance of the 15-item geriatric depression scale in a diverse elderly home care population
Measures of Depression and Depressive Symptoms
Validation of the Spanish version of the geriatric depression scale (GDS) in primary care
https://pubmed.ncbi.nlm.nih.gov/11921157/Validität der Geriatrischen Depressionsskala bei Altenheimbewohnern: Vergleich von GDS-15, GDS-8 und GDS-4 [Validity of the geriatric depression scale in nursing home residents: comparison of GDS-15, GDS-8, and GDS-4]
https://pubmed.ncbi.nlm.nih.gov/21598210/Validity and Reliability Study of the Japanese Version of the Geriatric Depression Scale 15 (GDS-15-J)
https://pubmed.ncbi.nlm.nih.gov/28452641/