to be fair, the article refers to the paper obliquely with the words, "just described in Langmuir by Jürgen Rühe of the University of Freiburg, in Germany." It

to be fair, the article refers to the paper obliquely with the words, "just described in Langmuir by Jürgen Rühe of the University of Freiburg, in Germany." It's not a link and I couldn't find a link in the article - so it's easy to miss. why don't articles like this ever link to their primary sources? online, it just takes a hyperlink - it could be added without any additional comment, just turning a part of the sentence into a link.