Are you trying to get links from authoritative sites ? Well, we all know how important and difficult it is to acquire links from great sites. If you are still following the age old practice of identifying the sites, sending them a mail requesting for a link etc. you are probably spending lot of time with less ROI. The success rate of such link requests are very low.
You may also want to check How to manage links under your control.
There are many ways you can build popular links without sending the link requests. Check out this infographic below to see how to build powerful links to your website. Try incorporating this into your SEO strategy.
Infographics credit Wordtracker