Double taxation

Dear All,

How should the claims for individiual double taxation be filed? 

Can it be filed online?

What all documents are needed while filing?

My status in India during the year 2013-2014 was Resident Indian and hence tax was deducted even for the time spent not in India. Assuming, double taxation policy exists between India and the country where I am working right now... What is the process of claiming the refund?

Please guide.

-Anand