1. Field, T.: Touch. MIT Press, Cambridge (2003)
2. Essick, G.K., McGlone, F., Dancer, C., Fabricant, D., Ragin, Y., Phillips, N., Jones, T., Guest, S.: Quantitative assessment of pleasant touch. Neurosci. Biobehav. Rev. 34(2), 192–203 (2010).
http://www.sciencedirect.com/science/article/pii/S0149763409000190
3. Swindells, C., MacLean, K.E., Booth, K.S., Meitner, M.: A case-study of affect measurement tools for physical user interface design. In: Proceedings of Graphics Interface (GI ’06), pp. 243–250 (2006)
4. Takahashi, K., Mitsuhashi, H., Murata, K., Norieda, S., Watanabe, K.: Feelings of animacy and pleasantness from tactile stimulation: Effect of stimulus frequency and stimulated body part. In: 2011 IEEE International Conference on Systems, Man, and Cybernetics (SMC), pp. 3292–3297 (2011).
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6084177
5. Nagano, H., Okamoto, S., Yamada, Y.: What appeals to human touch? effects of tactual factors and predictability of textures on affinity to textures. In: Proceedings of IEEE World Haptics Conference (WHC ’11), pp. 203–208 (2011).
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5945486