C. Ardito, P. Buono, D. Caivano, M. F. Costabile, R. Lanzilotti et al., Usability Evaluation: a survey of software development organizations, Proceedings of 33 International Conference on Software Engineering & Knowledge Engineering, 2011.

J. O. Bak, K. Nguten, P. Risgaard, and J. Stage, Obstacles to usability evaluation in practice, Proceedings of the 5th Nordic conference on Human-computer interaction building bridges, NordiCHI '08, pp.23-32, 2008.
DOI : 10.1145/1463160.1463164

Q. Bughuntress and . Lab, Mobile usability testing Problems and solutions, Research Report, Quality Assurance: Management & Technologies (QAMT), 2007.

X. Ferre, N. Juristo, and A. M. Moreno, Obstacles for the Integration of HCI Practices into Software Engineering Development Processes Encyclopedia of Human Computer Interaction, pp.422-464, 2006.

J. Gulliksen, I. Boivie, J. Persson, A. Hektor, and L. Herulf, Making a difference, Proceedings of the third Nordic conference on Human-computer interaction , NordiCHI '04, pp.207-215, 2004.
DOI : 10.1145/1028014.1028046

N. Juristo and X. Ferre, How to integrate usability into the software development process, Proceeding of the 28th international conference on Software engineering , ICSE '06, pp.1079-1080, 2006.
DOI : 10.1145/1134285.1134515

G. Lindgaard and J. Chattratichart, Usability testing, Proceedings of the SIGCHI conference on Human factors in computing systems , CHI '07, 2007.
DOI : 10.1145/1240624.1240839
URL : https://hal.archives-ouvertes.fr/hal-01497457

A. Muzaffar, F. Azam, H. Anwar, and A. Khan, Usability Aspects in Pervasive Computing: Needs and Challenges, International Journal of Computer Applications, vol.32, issue.10, pp.18-24, 2011.

S. Rosenbaum, J. A. Rohn, and J. Humburg, A toolkit for strategic usability, Proceedings of the SIGCHI conference on Human factors in computing systems , CHI '00, pp.337-344, 2000.
DOI : 10.1145/332040.332454

A. Seffah and E. Metzker, The obstacles and myths of usability and software engineering, Communications of the ACM, vol.47, issue.12, pp.71-76, 2004.
DOI : 10.1145/1035134.1035136

A. Strauss and J. Corbin, Basics of qualitative research. Techniques and Procedures for Developing Grounded Theory, 2.edition, 1998.