Links:
[1] http://www.cepi.org/order_publication
[2] http://www.cepi.org/print/833
[3] http://digibook.digi-work.com/Digibooks.aspx/Display?Key=dW5hbWU9Y2VwaSZpZD01NDgmZmlsZT1hSFIwY0RvdkwzZDNkeTVqWlhCcExtOXlaeTl6ZVhOMFpXMHZabWxzWlhNdmNIVmliR2xqTDJSdlkzVnRaVzUwY3k5d2RXSnNhV05oZEdsdmJuTXZaVzUyYVhKdmJtMWxiblF2TWpBd05pOHlNREEzVTNWemRHRnBibUZpYVd4cGRIbHVaWGR6YkdWMGRHVnlMbkJrWmc9PSZsYW5nPWVuJm1kNT1mZDFhMGU0YzcyMjdhMDMwOTMxMDY0NDhiYzg3MzFlMg==
[4] http://www.cepi.org/system/files/public/documents/publications/environment/2006/2007Sustainabilitynewsletter.pdf