Sohani, A., . Rafi Ullah, A. Rai, and O. Karni. “Closest Match Based Information Retrieval and Recommendation Engine Using Signature-Trees and Fuzzy Relevance Sorting”. American Scientific Research Journal for Engineering, Technology, and Sciences, vol. 45, no. 1, Aug. 2018, pp. 120-34, https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/4208.