http://www.openstack.org/themes/openstack/css/bootstrap.min.css?m=1466795520
http://theartmarket.com/skin/frontend/mgstheme/default/css/bootstrap.min.css
http://www.celebration.co.za/assets/plugins/bootstrap/css/bootstrap.min.css
http://www.topsmoke.ru/lib/bootstrap/css/bootstrap.min.css