I can't find this paper:
Quasi-static steady crack growth in small-scale yielding
DEAN, R H; HUTCHINSON, J W
Fracture mechanics; Proceedings of the Twelfth National Symposium, Washington University, St. Louis, Mo ; United States; 21-23 May 1979. pp. 383-405. 1980
If you had it, can you share it with me and sent it to my email box: scf05 [at] mails.thu.edu.cn (scf05[at]mails[dot]thu[dot]edu[dot]cn)
Thanks!
Zhaofeng