Libraries at University of Nebraska-Lincoln


Date of this Version



Burton, R. E. &Kebler, R. W. (1960). The 'half-life' of some scientific and technical literature. American Documentation, 11, pp. 20. Retrieved on January 8, 2020 from

Deo, V. N., &Mohal, S. M. (1995).Bibliometric study of doctoral dissertations on English language and literature. International Journal of Digital Library Services, 42(2), 81-95. Retrieved on December 28, 2018 from

Deshpande, M. (2007).Citation study of dissertation in library and information science. Annals of Library Science and Documentation, 44(2), 41-53.Retrieved on December 5, 2019 from

Hazarika, T., Sarma, D., & Gohain, A. (2010). Impact of Library Collection towards Doctoral Studies: A Case Study on Citation Analysis of PhD Dissertations in the School of Science & Technology at Tezpur University. 7 th Convention PLANNER - 2010, Tezpur University (pp. 319-337). Tezpur: INFLIBNET. Retrived on February 18, 2019 from

Kherde, M. R. (2003). Core journals in the field of Library and Information Science. Annals of library and information studies, 50 (1), 18-22. Retrieved on March 15, 2020 from

Mishra, D. K., Gawde, M., &Solanki, M. D. (2014).Bibliometric study of PhD theses in English. Global Journal of Academic Librarianship, 1(1), 19-36.Retrieved on January 8, 2019 from

Sangam, S. L., & Mogali, S. S. (2013). Obsolescence of Literature in the Field of Social Sciences. PEARL - A Journal of Library and Information Science, 7 (3), 162-168. Retrieved on March 12, 2020 from

Takei, C., Yoshikane, F., & Itsumura, H. (2015). Analysis of the Obsolescence of Citations and Access in Electronic Journals at University Libraries. Proceedings of ISSI 2015 Istanbul: 15th International Society of Scientometrics and Informetrics Conference. Istanbul. Retrieved On February 18, 2019from

Tonta, Y., & Al, U. (2006). Scatter and Obsolescence of Journals Cited in Theses and Dissertations of Librarianship. Library & Information Science Research, 28 (2), 281-296. Retrieved on January 8, 2019from


The present study is done by collecting and analyzing the references from the thirty theses submitted to the Department of Library and Information Science, Gauhati University in between 2011 to 2017. The year-wise distribution of theses is tabulated. From the 30 theses, 3684 citations have been retrieved where journals are found to be the most preferable source material followed by books and conference proceedings. Among the top 40 highly cited journals, 18 journals are from the UK followed by 14 from India. DESIDOC Journal of Library & Information Technology is on top rank with 72 citations. The citation half-life of literature is found approximately as 12 years.



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