https://rac.tj/en/ezhegodnaya-vstrecha-regionalnaya-ozonovoj-seti-evropy-i-tsentralnoj-azii-v-erevane-armeniya-26-28-maya-2015-goda/
ANNUAL MEETING OF THE REGIONAL OZONE NETWORK FOR EUROPE & CENTRAL ASIA, YEREVAN, ARMENIA, 26-28 May 2015