Rottenkolber M, Fischer R, Ibanez L, Fortuny J, Reynolds R, Amelio J, Gerlach R, Tauscher M, Thurmann P, Hasford J, Schmiedl S. Prescribing of long-acting beta-2-agonists/inhaled corticosteroids after the SMART trial. BMC Pulm Med. 2015 May 6;15:55.
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.