A Texas Instruments engineer has written an article which looks at the fundamentals of 3D viewing, including basics such as parallax, challenges for content creators and viewers, as well as some mobile device specific concerns and approaches. For those wishing to delve into the concepts underlying the physics and physiology of stereoscopic viewing and image creation, this is an excellent start. For those familiar with the concepts, it provides some interesting thoughts on challenges and techniques for autostereoscopic devices (3D without glasses).
As a side note, the term S3-D is used to denote Stereoscopic 3D, as opposed to, for instance, 3D modeling used in graphics production and animation. We think this is a good idea, given the variety of contexts and meaning that the plain term 3D can have.