http://www.johnconde.net/blog/tutorial-integrate-the-authorize-net-cim-api-with-php/
http://www.rubydoc.info/gems/authorize-net/1.5.2/index
http://www.rubydoc.info/gems/authorize-net/1.5.2
http://developer.authorize.net/hello_world/
http://www.johnconde.net/blog/all-about-authorize-nets-silent-post/
http://funonrails.com/2011/12/authorize-net-sim-payment-integration-with-rails/
https://github.com/AuthorizeNet/sample-code-ruby
http://www.authorize.net/content/dam/authorize/documents/SIM_guide.pdf
https://developer.authorize.net/api/
https://developer.authorize.net/api/reference/index.html#payment-transactions
http://www.authorize.net/videos/
http://railscasts.com/episodes/145-integrating-active-merchant
https://blog.joshsoftware.com/2012/01/16/authorize-net-aim-payment-integration-with-rails/
http://funonrails.com/2011/12/authorize-net-sim-payment-integration-with-rails/
http://www.rubydoc.info/gems/authorize-net/1.5.2/index
http://www.rubydoc.info/gems/authorize-net/1.5.2
http://developer.authorize.net/hello_world/
http://www.johnconde.net/blog/all-about-authorize-nets-silent-post/
http://funonrails.com/2011/12/authorize-net-sim-payment-integration-with-rails/
https://github.com/AuthorizeNet/sample-code-ruby
http://www.authorize.net/content/dam/authorize/documents/SIM_guide.pdf
https://developer.authorize.net/api/
https://developer.authorize.net/api/reference/index.html#payment-transactions
http://www.authorize.net/videos/
http://railscasts.com/episodes/145-integrating-active-merchant
https://blog.joshsoftware.com/2012/01/16/authorize-net-aim-payment-integration-with-rails/
http://funonrails.com/2011/12/authorize-net-sim-payment-integration-with-rails/