Itr refund time

if you have not digitally signed your itr-v then first of all you need to send a signed copy of itr-v to ITD-CPC. when you receive an acknowledgement of receipt of itr-v from ITD-CPC after that your return will be processed for refund and will be credited to your bank a/c. normally it takes 6 mnths for your refund to ne credited. but its not fixed it may take even longer.

Do I need TDS certificate or Interest Certificate to file for ITR - 2013-2014 ?