journal article in trade publication published in 2006

artículo científico publicado en 2006

abstract published in 2002

abstract published in 2002

abstract published in 2005

field study published in 2000

field study published in 2006

field study published in 2003

field study published in 2003

field study published in 2004

field study published in 2005

field study published in 2004

field study published in 1997

field study published in 1998

chapter published in 2005

book published in 2005

artículo científico publicado en 1997

artículo científico publicado en 2002

abstract published in 2002

abstract published in 2001

artículo científico publicado en 2002