Hahn (1984)
Fullerton and Wu (1998)
Spulber (1985)
Stavins (1995)
Adar and Griffin (1976)
Segerson (1988)
Horan, Shortle, and Abler (1998)
Weitzman (1974)
Kwerel (1977)
Cabe and Herriges (1992)
Schmutzler and Goulder (1997)
Malik (1990)
Harford (1987)
Harrington (1988)
Plourde (1972)
Xepapadeas (1992)