| Sep 08, 2015 | International Open Data Charter: Comments by CIS — Sumandro Chattapadhyay |
| Jul 22, 2015 | International Open Data Charter, Consultation Meeting, Bengaluru, July 28, 5:30 pm — Sumandro Chattapadhyay |
| Jul 07, 2015 | International Open Data Charter, Consultation Meeting, Delhi, July 09, 5:30 pm — Sumandro Chattapadhyay |