Mansfield CA. A consistent method for calibrating contingent value survey data. South Econ J. 1998;64(3):665-81.
Mines D, Abbuhl SB. Hydroxyapatite pseudopodagra in a young man: acute calcific periarthritis of the first metatarsophalangeal joint. Am J Emerg Med. 1996 Mar;14(2):180-2.