Vienna, June 13, IRNA � Iranian senior negotiators Abbas Araqchi and Majid Takht-e-Ravanchi are working on text of the comprehensive nuclear deal with EU deputy foreign policy chief Helga Schmidt.

Meanwhile, expert teams under leadership of Hamid Baeedinejad and Stephan Clement were discussing on appendix.

Araqchi and Ravanchi are in Vienna since Wednesday to complete comprehensive agreement text in the seventh round of talks.

In this round, the senior negotiators held bilateral meetings with their counterparts from member countries of Group 5+1.

The talks were scheduled to end on July 1, but, Iran says that it is not obliged to time limits and negotiations must proceed to reach good agreement.

By IRNA