References

1. Variants of the verb "to google" are used throughout this paper. It means to type something into the Google search bar and press the search button. first citation in article
   
2. Additional resources are available at http://www.googleguide.com/calculator.html and http://google.davidward.org/. first citation in article
   
3. Of course, all results obtained in calculations of this kind must be rounded to the correct number of significant figures. first citation in article