Evans MF, Poulos C, Smith VK. Who counts in evaluating the effects of air pollution policies on households? Non-market valuation in the presence of dependencies. J Environ Econ Manage. 2011 Jul 1;62(1):65-79.
Smith VK, Mansfield CA. Buying time: real and hypothetical offers. J Environ Econ Manage. 1998;36(3):209-24.
Whalley D, McKenna SP, de Jong Z, van der Heijde D. Quality of life in rheumatoid arthritis. Br J Rheumatol. 1997;36(8):884-8.
de Jong Z, van der Heijde D, McKenna SP, Whalley D. The reliability and construct validity of the RAQoL: a rheumatoid arthritis-specific quality of life instrument. Br J Rheumatol. 1997;36(8):878-83.