共 50 条
- [1] CONFERENCE ON INFORMATION-RETRIEVAL LANGUAGES NAUCHNO-TEKHNICHESKAYA INFORMATSIYA SERIYA 2-INFORMATSIONNYE PROTSESSY I SISTEMY, 1977, (11-1): : 57 - 59
- [5] PROCEEDINGS OF THE INTERNATIONAL STUDY CONFERENCE ON CLASSIFICATION FOR INFORMATION-RETRIEVAL LIBRARY QUARTERLY, 1959, 29 (02): : 138 - 139