2004
Kachmar, Mark, Sanchez-Azofeifa, Arturo
1999
Camino-Beck, Tomas de, Sanchez-Azofeifa, Arturo
Working Paper 2001-4
2008
Camino-Beck, Tomas de, Hamilton, Stephen, Sanchez-Azofeifa, Arturo
Project Report 2001-11