An improved Justa Stove jointly developed by the non-profit Proyecto Mirador and the Aprovecho Research Center called the "Dos por Tres" is being disseminated in Honduras with more than 20,000 stoves installed as of 2011. The Dos por Tres has been registered as Project 690 and certified by the Gold Standard Foundation to reduce greenhouse gas emissions by 2.7 tons per year. All Proyecto Mirador documentation related to proof of these reductions can be viewed on the Gold Standard Project registry.