How does Fitts' law fit pointing and dragging? - Douglas J. Gillan; Kritina L. Holden; Susan Adam; Marianne Rudisill; Laura Magee (CHI, 1990)

How Should Fitts' Law be Applied to Human-Computer Interaction? - Douglas J. Gillan; Kritina L. Holden; Susan Adam; Marianne Rudisill; Laura Magee (Interact. Comput., 1992)