CODEN

CODEN是由ASTM E250標準所制定的期刊標識符。CODEN由6位的英文字母和數字組成，可對期刊及單行刊物進行簡潔，獨特和明確的標識。CODEN在業內使用廣泛，它是技術和化學相關出版物中引用的期刊的引文系統，並且是許多書目目錄中的搜索工具。

發明者Charles Bishop為了便於記憶和整理，將期刊名稱的首字母提取形成了CODEN。1953年，使用CODEN的文檔系統被首次提出，最初為4位字母的格式，加上卷和頁碼後，可準確定位期刊中的文章。^[1]

1961年，美國材料和試驗協會（ASTM）的L.E. Kuentzel將CODEN增加到5位字符。^[2]^[3]^[4]此後，ASTM發布了《CODEN for Periodical Titles》（期刊名稱編碼），至1974年，已有12萬8千種期刊獲得了CODEN編碼。1975年，CODEN系統由美國化學學會（ACS）管理，而化學文摘社（CAS）會負責分發CODEN編碼。^[5]1976年，ASTM發布的E250-76標準中將CODEN再次增加至6位字符。^[6]

CODEN的前4個字符取自期刊標題中單詞的首字母，第5位取A-F之間。第6位為校驗碼。而對於單行出版物，CODEN的前兩位改為數字，且第5位可用所有字母。

參考資料

^ Bishop, Charles: "An integrated approach to the documentation problem". In: American Documentation (ISSN 0096-946X, CODEN AMDOA7), Vol. 4, p. 54–65 (1953).
^ Kuentzel, L. E.: "Current status of the CODEN Project". In: Special Libraries (ISSN 0038-6723), Vol. 57, p. 404–406 (1966)
^ Kuentzel, L. E.: "CODEN for periodical titles, Vol. 1 ; Periodical titles by CODEN, non-periodical titles, deleted CODEN". In: ASTM data series publication, American Society for Testing and Materials (ISSN 0066-0531); Vol. 23 A (1966).
^ Kuentzel, L. E.: "CODEN for periodical titles, Vol. 2 ; Periodical titles by title". In: ASTM data series publication, American Society for Testing and Materials (ISSN 0066-0531); Vol. 23 A (1966).
^ Anon: "Chemical Abstract Service assumes ASTM CODEN assignment". In: Journal of Library Automation (ISSN 0022-2240), Vol. 8, p. 12 (1975).
^ ASTM Standard E 250-76: Standard recommended practice for use of CODEN for Periodical Title Abbreviations. Philadelphia. ASTM, 1976.

外部連結

CAS Source Index (CASSI) Search Tool Archive-It的存檔，存檔日期2010-02-11

[1] Bishop, Charles: "An integrated approach to the documentation problem". In: American Documentation (ISSN 0096-946X, CODEN AMDOA7), Vol. 4, p. 54–65 (1953).

[2] Kuentzel, L. E.: "Current status of the CODEN Project". In: Special Libraries (ISSN 0038-6723), Vol. 57, p. 404–406 (1966)

[3] Kuentzel, L. E.: "CODEN for periodical titles, Vol. 1 ; Periodical titles by CODEN, non-periodical titles, deleted CODEN". In: ASTM data series publication, American Society for Testing and Materials (ISSN 0066-0531); Vol. 23 A (1966).

[4] Kuentzel, L. E.: "CODEN for periodical titles, Vol. 2 ; Periodical titles by title". In: ASTM data series publication, American Society for Testing and Materials (ISSN 0066-0531); Vol. 23 A (1966).

[5] Anon: "Chemical Abstract Service assumes ASTM CODEN assignment". In: Journal of Library Automation (ISSN 0022-2240), Vol. 8, p. 12 (1975).

[6] ASTM Standard E 250-76: Standard recommended practice for use of CODEN for Periodical Title Abbreviations. Philadelphia. ASTM, 1976.

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