The literature in the footnote shows what literature you quoted or referred to in a paragraph of the article. The last part of the reference refers to what literature you referred to when writing this paper, that is to say, the footnote in the article and the literature you read but didn't actually use in your own paper are counted as references.
An academic paper is a scientific record of new scientific research achievements or innovative ideas and knowledge of an academic topic in an experimental, theoretical or predictive way, or a scientific summary of new progress by applying known principles, so as to provide a written document for reading, communicating, discussing or publishing in academic journals or for other purposes. Academic papers can be divided into communicative papers and evaluative papers according to the purpose of writing.