If you meant something else — such as a request to in a study on digital piracy — please clarify, and I can guide you on how to search academic databases like Google Scholar, JSTOR, or Scopus for relevant sources.
If you are looking for free "deep" content (academic, scientific, or rare books) legally, consider these authoritative sources: Project Gutenberg freebookspotcom hot
Here is the hard truth for those chasing the "freebookspotcom hot" dream: If you meant something else — such as
: Whether you're into sci-fi, engineering, or classic literature, the library is huge. No Registration Needed or rare books) legally
