Bonnewyn, A., Shah, Abdul Khaliq, Bruffaerts, R. and Demyttenaere, K. (2016) Are religousness and death attitudes associated with the wish to die in older people? International Psychogeriatrics, 28 (3). pp. 397-404. ISSN 1041-6102
World Intellectual Property Organization (2015) Method for measuring the mechanical properties of materials using depth sensing indentation. WO2017017409A1.