How do I get an email alert when my paper is cited? I recently published a paper in a journal which does not offer a notification system to send email alerts when a paper is cited. The journal is a well known and has a high-impact factor in my field. Are there free services which can automatically send me an email alert when my paper is cited in another publication?
You can set up an alert on Google scholar that will do exactly what you want. From Google's help page:


  How do I get notified when a particular paper is cited?
  
  Search for the title of your paper, e.g., "Anti de Sitter space and
  holography"; click on the "Cited by" link at the bottom of the search
  result; and then click on the envelope icon in the left sidebar of the
  search results page.


An even more effective way can be to set up a google scholar citation profile and select "Follow new citations" from the appropriate checkbox.