To link your external publications to your profile page, click your name at the top right of the app when you're logged in to your account.
Click the plus icon on the top right of the publications section in the Setting page or the "Add Publication" link.
For each new publication add the title, URL, date published, and then click "Submit".
Once submitted, your publications will be linked to your account and available for others to see via your profile page. You can add as many publications as you like and if you decide you need to remove one, click the "x" to the right of the linked publication in the publications section.