some users ask me ho to index their monographs with some services.
Sometimes it’s clear how to proceed, for instance:
Google Scholar → edit robots.txt
WorldCat → Add the repository OAI link to the interface
DataCite → It works out of the box using DOI numbers
But I can’t find the way for: PubMed, ISBNdb, CrossRef.
Reading some old posts I undestand that, for PubMed and ISBNdb, I have to add an API key somewere. Am I wrong? How can I apply this key?
For CrossRef I undestand tha I have to export an XML file with DOI and I have to upload it on their site. How to do this?