A law review or law journal is a scholarly journal or publication that focuses on legal issues. A law review is a type of legal periodical. Law reviews are a source of research, imbedded with analyzed and referenced legal topics; they also provide a scholarly analysis of emerging legal concepts from various topics. The primary function of a law review is to publish scholarship in the field of law. Law reviews publish lengthy, comprehensive treatments of subjects, that are generally written by law professors, and to a lesser extent judges, or legal practitioners. The shorter pieces, attached to the articles, commonly called "notes" and "comments", often are written by law student members of the law review. Law review articles often express the thinking of specialists or experts with regard to problems, in a legal setting, with potential solutions to those problems. Historically, law review articles have been influential in the development of the law; they have been frequently cited as persuasive authority by courts. Some law schools publish specialized reviews, dealing with a particular area of the law, such as civil rights and civil liberties, international law, environmental law, and human rights. Some specialized reviews focus on statutory, regulatory, and public policy issues.