Online, Paper, or Both?
http://www.stc.org/confproceed/1995/PDFs/PG268.PDF

Jensen, Susan M.
STC Proceedings
1995

Abstract:

You need to ask a variety of questions before committing to a documentation medium. When balanced with market directives, a complete analysis of your user’s communication needs can identify the appropriate medium or media. This progression topic will develop a series of questions that lead to the right media solution for your product.