Gatekeeping sociology

I want to make a study in Gatekeeping sociology, please define me the basic concept of this and also provide the good writers books to go on for further studies?

[Shaleen]

If you want to so study in Gatekeeping Sociology. It become a very growingly interested subject. Basically it is a Subject of Sociology-

Communication and Media Studies.
It was originally focused on the mass media with its few-to-many dynamic. but now gatekeeping theory also addresses face-to-face communication and the many-to-many dynamic inherent in the Internet. The theory was first instituted by social psychologist Kurt Lewin in 1943.
Gatekeeping is the process through which information is filtered for dissemination, whether for publication, broadcasting, the Internet, or some other mode of communication.
The academic theory of
Gatekeeping is found in multiple fields of study, including communication studies, journalism, political science, and sociology. Gatekeeping occurs at all levels of the media structure - from a reporter deciding which sources are chosen to include in a story to editors deciding which stories are printed or covered, and includes media outlet owners and even advertisers.
Here are some name of writers who have given a good research on this subject
-Barzilai-Nahon, K. (2009). Gatekeeping: A critical review. Annual Review of Information Science and Technology.
-Lewin, Kurt, "Frontiers in Group Dynamics," Human Relations,
-White, David Manning. (1964). "The 'Gatekeeper': A Case Study In the Selection of News