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2. Automatic Indexing: A State-of-the-Art Report;Stevens;National Bureau of Standards Monograph 91,1970
3. Aspects of computer text processing—1;Steinacker;Data Proc.,1973
4. Aspects of computer text processing—2;Steinacker;Data Proc.,1973
5. Development of method for automatic detection of significant single- and multiword descriptors;Steinacker;Computers and the Humanities,1973