https://scholar.google.com/scholar_lookup?title=The+PH+of+Beverages+Available+to+the+American+Consumer&author=Reddy,+A.&author=Norris,+D.F.&author=Momeni,+S.S.&author=Waldo,+B.&author=Ruby,+J.D.&publication_year=2016&journal=J.+Am.+Dent.+Assoc.&volume=147&pages=255–263&doi=10.1016/j.adaj.2015.10.019&pmid=26653863