Neelameghan, A. 1972. “Computer Simulation of Some Steps in Classifying : Built-in Features of a Theory-Based Scheme for Classification (Classification Problems, 66). (Non-Conventional Methods in Document Retrieval. 15)”. Journal of Information and Knowledge 9 (4):499-522. https://doi.org/10.17821/srels/1972/v9i4/49259.