Sudarshan, B. “Development of Reference Retrieval System With Simultaneous Building up of Thesaurus for Industrial Information Centres (Thesaurus Series. 5)”. Journal of Information and Knowledge 16, no. 3 (January 3, 1979): 77–83. Accessed January 9, 2025. https://srels.org/index.php/sjim/article/view/50476.