am doing a dissertation on the shareholder wealth effect of a merger and acquisition case between 'Alcatel SA and Lucent Technolgies Inc. It is based on an event study method. Please can you help me form the basis of my Literature Review of the follwing themes: [please add more theories] - PLEASE use academic articles, like 'journal of finance' etc.

(1) Merger related value effect theories [creation, reduction

- Acquisitions are strategic decisions and, thus, motives behind these transactions are generally complex in nature and differ among deals (Trautwein, 1990). However, many researchers agree on that the main motive and rationale behind acquisitions are synergies

- While acquisitions are supposed to be beneficial for the acquiring company's shareholders, it is also important to highlight that mergers might lead to the so-called principal-agent problem, which describes the conflict between the company's management and shareholders

- value reducing theories: Agency costs / managerial entrenchment (Sheleifer and Vishnu, 1986)

- Impact of CEO narcissism on M&A performance (Aktas et al., 2016)

(2) MOTIVATIONS FOR PURSUING MERGERS(what the literature says about having that sort of merger and why it contributed to the outcome of this merger specifically)

MERGER IN TELECOMMUNICATIONS SECTION 2006

(3)Stock price reaction theories:

The criteria is:

• review the critical points of current knowledge on a particular topic, it is a critical synthesis of the current state of knowledge in a particular field,summaries the previous findings to inform your own study.

• focus: read, synthesis, summaries, analyses, evaluate the scholarly materials about a specific topic. Focus on the essential message that is delivered from the prev lit, process the info, and try draw the most important message, alongside importance evaluation.