http://www.avalara.com/blog/2016/01/28/how-to-manage-your-fuel-excise-tax-audit-risk-step-1/
http://www.avalara.com/blog/2016/02/02/how-to-manage-your-fuel-excise-tax-audit-risk-step-2/
http://www.avalara.com/blog/2016/02/08/how-to-reduce-your-fuel-excise-tax-audit-risk-step-3/