1. Adhikari DR (2005) National factors and employment relations in Japan. Japan Institute of Labour Policy and Training, Tokyo
2. Ahearne AG, Shinada N (2005) Zombie firms and economic stagnation in Japan. Institute of Economic Research Hi-Stat Discussion paper series
3. No. d05-95, Hitotsubashi University, Tokyo. http://hdl.handle.net/10086/13991 . Retrived 15 June 2017
4. Andress FJ (1954) The learning curve as a production tool. Harvard Business Review (January–February), pp 87–97
5. Argote L (2013) Organizational learning; creating, retaining, and transferring knowledge, 2nd edn. Springer, New York