8Jensen M C, Ruback R S. The market for corporate control: the scientific evidence [J]. Journal of Financial Economics, 1983, 11 (1/2/3/4) : 5-50.
9Bradley M, Jarrell G A, Kim E H. On the existence of an optimal capital structure: theory and evidence [ J]. Journal of Finance, 1984, 39(3): 857-878.
10Jensen M G, Meekling W H. Theory of the firm: managerial behavior, agency costs and ownership structure [ J ]. Journal of Financial Economics, 1976, 3 (4) : 305- 360.