Sucheta Thube, Bhavna Visave, Aishwarya Walekar, Rekha Hiware, and Prof. Mrs.Rashmi Bhattad. 2017. “Keyword Extraction and Clustering for Document Recommendation in Conversations”. International Journal of Advance Research in Engineering, Science & Technology 4 (5):636-41. https://ijarest.org/index.php/ijarest/article/view/1580.