Three Decades of Research and Professional Practice on Printed Software Tutorials for Novices
http://www.ingentaconnect.com/content/stc/tc/2009/00000056/00000003/art00007
  access restricted (by the publisher) to members/subscribers/customers only
  peer-reviewed

van der Meij, Hans, Joyce Karreman and Michaël Steehouder
Technical Communication Online
2009

Abstract:

Provides a historic overview of research on printed software tutorials. Describes developments in design approaches, refinements in design, and user experience.