| medium | details |
| gevrey@pobox.com | |
| Google Hangouts | gevrey@pobox.com |
| Skype | christophe.gevrey |
| http://www.twitter.com/cri | |
| Google+ | https://plus.google.com/102226214045269179279 |
| http://www.linkedin.com/in/gevrey | |
| https://www.facebook.com/christophe.gevrey.1 | |
| Web | www.cri.ch |