Bernfort L, Brodtkorb T. QALY som effektmått inom vården : möjligheter och begränsningar. Linköping: linköping University Electronic Press. Cmt- Rapport. 2012.
Smith VK, Evans MF, Banzhaf HS, Poulos C. Can weak substitution be rehabilitated? Environ Resour Econ (Dordr). 2010 Feb 1;45(2):203-21.
Brodtkorb T. National system for assessment, prioritization and introduction of non-pharmaceutical health technologies, a pilot study. Cmt- Rapport. 2010.
Mansfield CA. Despairing over disparities: an empirical analysis of the relationship between willingness-to-pay and willingness-to-accept. Environ Resour Econ (Dordr). 1999;13(2):219-34.