International Journal of Social Robotics

[Svengli]

http://www.springerlink.com/content/1875-4791

Very academic but worth a scan if you're into that stuff.

There's a extraordinarily detailed technical article on how robotic skin can gain the same touch characteristics are the human hand. Obviously this research could be adapt to other human/robotic parts.

Another article is: "Using Attachable Humanoid Parts for Realizing Imaginary Intention and Body Image" - Lol, this is a serious article, we can be happy people are working hard on these problems.