I am an Indian student born and raised in India. I am currently a research scholar. I have published some research work in Russia, I will be going to Russia for presenting the research paper. In the visa process, I need an invitation letter, I am not sure whether I need original or scanned one. If I ask for the original it may take a few weeks to arrive the original letter. I am applying for Humanitarian type of visa. Please Help.
Note that I will be staying for a week in russia.
Question : Do I need scanned copy or original invitation letter for Russian (Humanitarian) visa?