2Becket, Gary S. Human Capital, third edition. The university of Chicago Press.
3Vickie Siul:Managlng by competencies a study on the managerlal competencies of hotel middle managers in Hong Kong Hospital Management , 1998 (17): 25-31.
4Lepak,Snell I. The Human Resource Architecture: Toward a Theory of Human Capital Allocation and Development, Academy of Management Review, 1999,241.
5Milevsky M A,Posner S E. Asian Options, the Sum of Lognormals and the Reciprocal Gamma Distribution, Journal of Economic Dynamics and Control, 1998 , 33 : 409- 422.