图标倾斜设计的相关研究及文献出处

"The Effects of Tilt and Orientation on Icon Recognition" by R. W. Proctor and K. Vu, published in Human Factors: The Journal of the Human Factors and Ergonomics Society in 2002.
"The Influence of Tilt on Icon Recognition" by M. H. Jansen and P. G. J. B. H. Vermeulen, published in Proceedings of the 27th International Conference on Human Factors in Computing Systems in 2009.
"The Effect of Icon Tilt on Icon Recognition: A Comparison of Younger and Older Adults" by E. L. Hulteen and G. L. Murray, published in Journal of Gerontology: Psychological Sciences in 2013.
"Effects of Icon Tilt and Background Color on Icon Recognition" by H. J. Kim and S. J. Lee, published in Journal of Usability Studies in 2014.
"The Influence of Icon Tilt on User Performance in Mobile Interfaces" by M. A. Cardoso and C. C. Nunes, published in Proceedings of the 17th International Conference on Human-Computer Interaction with Mobile Devices and Services in 2015.