1. Adkins , S. 2002 Market analysis of the 2002 U.S. e-learning industry: Convergence, consolidation and commoditization Brandon-Hall 2002 Market Analysis Series http://www.brandon-hall.com/public/execsum_simmarket.pdf
2. Electronic performance monitoring: A consideration of rights;Ambrose,1998
3. Anderson , T. 2002 Is e-learning right for your organization Learning circuits http://www.learningcircuits.org/2002/jan2002/anderson.html
4. Models of supervisory job performance ratings;Borman;Journal of Applied Psychology,1991
5. Technology: Implications for HRM;Cardy,2003