Winbladh, K., H. Ziv, and D. Richardson,
"Evolving requirements in patient-centered software",
3rd workshop on Software Engineering in Health Care (SEHC 11), at the 33rd International Conference on Software Engineering, Waikiki, Honolulu, HI, ACM, May, 2011.
Winbladh, K., H. Ziv, and D. J. Richardson,
"Eliciting required characteristics for usable requirements engineering approaches",
Proceedings of the 2009 ACM symposium on Applied Computing, Honolulu, Hawaii, ACM, pp. 360-364, 2009.