Links:
[1] http://www.cepi.org/order_publication
[2] http://www.cepi.org/print/674
[3] http://digibook.digi-work.com/Digibooks.aspx/Display?Key=dW5hbWU9Y2VwaSZpZD0zNTcmZmlsZT1hSFIwY0RvdkwzZDNkeTVqWlhCcExtOXlaeTl6ZVhOMFpXMHZabWxzWlhNdmNIVmliR2xqTDJSdlkzVnRaVzUwY3k5d2RXSnNhV05oZEdsdmJuTXZkSEpoYm5Od2IzSjBMekl3TURrdlZISmhibk53YjNKMFEyRnlZbTl1Um05dmRIQnlhVzUwUVhOelpYTnpiV1Z1ZENCSGRXbGtaV3hwYm1WekxuQmtaZz09Jmxhbmc9ZW4mbWQ1PWQ2MjA5YWM2YmEzYzUyZDI2MzgzZDUwYmM3OTIyZTg4
[4] http://www.cepi.org/system/files/public/documents/publications/transport/2009/TransportCarbonFootprintAssessment Guidelines.pdf