What is another word for grey literature?
Pronunciation: [ɡɹˈe͡ɪ lˈɪtɹɪt͡ʃə] (IPA) 
Grey literature, also known as gray literature, is a term used to refer to published material that is not widely available in traditional publishing channels. This type of literature includes reports, white papers, patents, conference proceedings, and other materials that are not formally published. As a result, finding grey literature can be a challenge, but there are alternatives available that can help locate this valuable information. Some other terms used to describe grey literature include fugitive literature, hidden literature, and non-conventional literature. Although the term may vary, the ultimate goal is to find and utilize information that is not widely available in order to gain a more comprehensive understanding of a given topic.
