In 1980 we felt that ZOG was sufficiently … project--to build a computer-assisted management system for the … [Newell et al. CMU Computers Sci Research Review 1981]. … The development phase of the project ended in … running a network of 28 powerful personal computers … [p. 302, initially had 20,000 frames]
Google-1
Google-2
Copyright clearance needed for quotation.