The following are the common provisions that required to be complied with in connection with Merger:
(a) Section 391 to 394 of the Companies Act, 1956;
(b) Rule 67 to 81 of the Companies (Court ) Rules, 1959;
(c) Income Tax - Section 47 and also go through up to 50C and Section 2(1B), 72A read with Rule 9C and all its related sections.
(d) Accounting Standard AS 14.
For case laws you may refer to company cases, on each edition, many cases are reported and you can view the scheme on doing inspection from the MCA portal.
R.Ramela