共 50 条
- [32] DOCUMENT-RETRIEVAL SYSTEMS - WILLETT,P LIBRARY RESOURCES & TECHNICAL SERVICES, 1990, 34 (01): : 109 - 110
- [34] BOOLEAN INTERPRETATION OF CONJUNCTIONS FOR DOCUMENT-RETRIEVAL JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE, 1987, 38 (04): : 245 - 254
- [36] DOCUMENT-RETRIEVAL SYSTEMS - WILLETT,P PROGRAM-AUTOMATED LIBRARY AND INFORMATION SYSTEMS, 1989, 23 (03): : 359 - 360
- [40] CONDITIONS FOR MAXIMUM CONVERGENCE OF DIALOG DOCUMENT-RETRIEVAL NAUCHNO-TEKHNICHESKAYA INFORMATSIYA SERIYA 2-INFORMATSIONNYE PROTSESSY I SISTEMY, 1990, (03): : 15 - 17