Modern Greek as a source for the Ancient lexicon

The most comprehensive study is Modern Greek evidence for the ancient Greek vocabulary  by George Pelham Shipp.

See excerpts here.

The standard work on the use of ancient Greek in Modern Greek is Andriotis, Lexikon der Archaismen in neugriechischen Dialekten. 

Also useful is the Λεξικό αρχαϊστικών φράσεων by Δημήτριος Τσιρόγλου.