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# Deeper, Easier, Citations  Inserting a reference in a tool like Authorea is as simple as cutting & pasting the URL from ADS, like this: \cite{http://adsabs.harvard.edu/abs/2014arXiv1401.2134G}.  e.g. cut & paste URL referencing, DOIs, ORCID, w/in Authorea  \cite{2014arXiv1401.2134G}