Simon Inger Consulting Ltd has released How Readers Discover Content in Scholarly Publications.
Here's an excerpt:
This report is the output of a large-scale survey of readers of scholarly publications (n=40439) and their behaviour in the discovery of journal articles and online books. The survey was conducted during October, November, and December of 2015. While usage statistics and analytics gathered by publishers, libraries and intermediaries can give us a partial view of discovery behaviour, there are many gaps in the knowledge that these can provide which we have endeavoured to fill by aski ng readers what tools they use in discovery.