The Predictability of Commands in a Spreadsheet Program. - Norman S. Guadagno; David M. Lane; Richard R. Batsell; H. Albert Napier (Interact. Comput., 1990)

Knowledge of Command Usage In a Spreadsheet Program. - H. Albert Napier; Richard R. Batsell; David M. Lane; Norman S. Guadagno (Data Base, 1992)