The article is pretty thorough and cites its sources and says 'often' and 'some' when appropriate.....and is subject to revision & editing by those qualified. That seems to me to be a better situation than just assertions in a printed encyclopedia or undocumented claims on some internet site.
   I see myriads of documentation and citations in this one.....and I assume there are many more qualified than I or anyone here to review & edit it.