1Hambrick D C, Msaon P A. Upper echelons: the organization as a reflection of its top managers [J] . Academy of Management Review, 1984, (9): 193 -206.
2Hambrick D C, D 'Aveni R A. Top team deterioration as part of the downward spiral of large corporate bankruptcies [J] . Management Science, 1992, (38): 1445 -1466.