Semrau, M., van Ommeren, M., Blagescu, M., Griekspoor, A., Howard, L. M., Jordans, M., Lempp, H., Marini, A., Pedersen, J., Pilotte, I., Slade, M. & Thornicroft, G. (2012). The Development and Psychometric Properties of the Humanitarian Emergency Settings Perceived Needs (HESPER) Scale. American Journal of Public Health, 102(10), e55-e63.