K. A. Siek, Y. Rogers, and K. H. Connelly, Fat Finger Worries: How Older and Younger Users Physically Interact with PDAs, Human-Computer Interaction ? INTERACT 2005, pp.267-280, 2005.
DOI : 10.1037/0021-9010.73.4.711

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

K. Ueda, N. Okochi, A. Chikawa, A. Ito, Y. Hiramatsu et al., Usability Evaluation of Mobile Phone for the Elderly: The Effect of Properties of the Button, Human Interface, pp.673-676, 2009.

C. Stößel, H. Wandke, and L. Blessing, Gestural Interfaces for Elderly Users: Help or Hindrance?, Gesture in Embodied Communication and Human-Computer Interaction, pp.269-280, 2010.

C. Stößel and L. Blessing, Mobile Device Interaction Gestures for Older Users, Proceedings of the 6th Nordic Conference on Human-Computer Interaction (NordiCHI'10): Extending Boundaries, pp.793-796, 2010.

D. Arias-torres, The Design and Evaluation of a Pen-Based Computer Interface for Novice Older Users, 2006 Seventh Mexican International Conference on Computer Science, pp.142-150, 2006.
DOI : 10.1109/ENC.2006.34

M. Mahmud and H. Kurniawan, Involving Psychometric Tests for Input Device Evaluation with Older People, Proceedings of the 19th Conference of the Computer- Human Interaction Special Interest Group (CHISIG) of Australia on Computer-Human Interaction: Citizens Online: Considerations for Today and the Future, 2005.

W. Accessibility and O. People, Meeting the Needs of Ageing Web Users, http://www.w3.org/WAI/older-users/ 12. iOS Human Interface Guidelines

C. Leonardi, A. Albertini, F. Pianesi, and M. Zancanaro, An exploratory study of a touch-based gestural interface for elderly, Proceedings of the 6th Nordic Conference on Human-Computer Interaction Extending Boundaries, NordiCHI '10, pp.845-850, 2010.
DOI : 10.1145/1868914.1869045

G. Lepicard and N. Vigouroux, Touch Screen User Interfaces for Older Subjects, Computers Helping People with Special Needs, pp.592-599, 2010.
DOI : 10.1007/978-3-642-14100-3_88

I. Darroch, J. Goodman, S. Brewster, and P. Gray, The Effect of Age and Font Size on Reading Text on Handheld Computers, Human-Computer Interaction ? INTERACT 2005, pp.253-266, 2005.
DOI : 10.1145/778712.778775

S. Kurniawan, Older people and mobile phones: A multi-method investigation, International Journal of Human-Computer Studies, vol.66, issue.12, pp.889-901, 2008.
DOI : 10.1016/j.ijhcs.2008.03.002

R. G. Stone, Mobile Touch Interfaces for the Elderly, Proceedings of ICT, Society and Human Beings, 2008.

T. Guerreiro, H. Nicolau, J. Jorge, and D. Goncalves, Towards accessible touch interfaces, Proceedings of the 12th international ACM SIGACCESS conference on Computers and accessibility, ASSETS '10, pp.19-26, 2010.
DOI : 10.1145/1878803.1878809

D. Mcgookin, S. Brewster, and W. Jiang, Investigating touchscreen accessibility for people with visual impairments, Proceedings of the 5th Nordic conference on Human-computer interaction building bridges, NordiCHI '08, pp.298-307, 2008.
DOI : 10.1145/1463160.1463193

T. Masui, POBox: An Efficient Text Input Method for Handheld and Ubiquitous Computers, Proceedings of the 1st International Symposium on Handheld and Ubiquitous Computing (HUC'99), pp.288-300, 1999.
DOI : 10.1007/3-540-48157-5_27

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=

A. S. Macdonald, The UD Phenomenon in Japan: Product Innovation Through Universal Design, Proceedings of the 4th International Conference on Universal Access in Human Computer Interaction: Coping with Diversity (UAHCI'07), pp.224-233, 2007.
DOI : 10.1007/978-3-540-73279-2_26

A. Chikawa, K. Ueda, N. Okochi, A. Ito, Y. Hiramatsu et al., Usability Evaluation of Touch Screen Mobile Phone for the Elderly, pp.677-680, 2009.

S. Lee and S. Zhai, The performance of touch screen soft buttons, Proceedings of the 27th international conference on Human factors in computing systems, CHI 09, pp.309-318, 2009.
DOI : 10.1145/1518701.1518750