^Klockenberg, E.A. Rationalisierung der Schreibmaschine und ihrer Bedienung [Rationalization of typewriters and their operation]. Berlin: Springer. 1926.
^Kroemer, K.H. Berhard. Human engineering the keyboard. Human Factors (Human Factors Society). February 1972, 14 (1): 51–63.
^Buxton, Bill. DataHand. Buxton Collection. Microsoft Corporation. [26 October 2022]. (原始内容存档于2022-10-26). This keyboard works by having each of your ten fingers choosing the character you want by selecting from a radial menu. You can push down, or move north, south, east or west, and get a different character for each.
^Hobday, Stephen. KEYBOARDS DESIGNED TO FIT HANDS & REDUCE POSTURAL STRESS. Paper presented by S.W. HOBDAY at the NINTH CONGRESS OF THE INTERNATIONAL ERGONOMICS ASSOCIATIONS, 2–6 September 1985, Bournemouth, England. PCD Maltron Ltd. September 1985 [2015-02-25]. (原始内容存档于1 June 2015).
^Hobday, Stephen. A Keyboard to Eliminate the Stress and the Pain.. Computer Related Upper Limb Disorder. Paper presented to the 19th Annual Congress of IMART 4th May 1994. PCD Maltron Ltd. 4 May 1994 [2015-02-25]. (原始内容存档于6 October 2014).
^Hegmann, Kurt T.; Melhorn, J. Mark; Ausfahl, James; Freshwater, M. Felix; Prezzia, Charles P.; Rempel, David M.; Roll, Shawn C.; Rawlins, Arlen J.; Werner, Robert A. (编). Hand, Wrist, and Forearm Disorders Guideline(PDF). American College of Occupational and Environmental Medicine. June 30, 2016: 42 [2023-01-03]. (原始内容存档(PDF)于2023-01-03).