@article{mcguffin2005b,
  author = {Michael J. McGuffin and Ravin Balakrishnan},
  title = {Fitts' Law and Expanding Targets:
        Experimental Studies and Designs for User Interfaces},
  journal = "ACM Transactions on Computer-Human Interaction (TOCHI)",
  year = 2005,
  month = {December},
  volume = 12,
  number = 4,
  pages = {388--422},
}