The Internet Archive has digitized a microfilm copy of this work. It may be possible to borrow a copy for reading.
W. Geyer, M. J. Muller, M. T. Moore, E. Wilcox, L.-T. Cheng, B. Brownholtz, C. Hill, D. R. Millen. "Activity Explorer: Activity-centric collaboration from research to product." IBM Systems Journal 45.4 (2006) 713-738