author = { Vawda, Ayesha World Bank Gauri, Varun },

title = { Vouchers for basic education in developing countries a principal-agent perspective },

publisher = {World Bank},

keywords = { Educational vouchers Developing countries },

year = {[2003]},

abstract = {"March 20, 2003},

abstract = {Includes bibliographical references},

abstract = {Title from title screen as viewed on March 25, 2003},

booktitle = {Policy research working paper ; 3005},

address = { Washington, D.C },

url = { http://slubdd.de/katalog?TN_libero_mab2 }