BITS 0.2
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alternatives | inline-graphic | private-char | chem-struct | inline-formula | journal-id
| label | tex-math | mml:math | abbrev | index-term | index-term-range-end | milestone-end
| milestone-start | named-content | styled-content | annotation | article-title |
chapter-title | collab | collab-alternatives | comment | conf-date | conf-loc | conf-name
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etal | ext-link | fpage | gov | institution | isbn | issn | issn-l | issue | issue-id
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BITS 1.0
( #PCDATA | inline-supplementary-material | related-article | related-object | hr
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| conf-date | conf-loc | conf-name | conf-sponsor | date | date-in-citation | day
| edition | email | elocation-id | etal | ext-link | fpage | gov | institution | institution-wrap
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BITS 2.0
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| annotation | article-title | chapter-title | collab | collab-alternatives | comment
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issue-part | issue-title | lpage | month | name | name-alternatives | object-id |
page-range | part-title | patent | person-group | pub-id | publisher-loc | publisher-name
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BITS 2.1
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| inline-formula | journal-id | label | tex-math | mml:math | abbrev | index-term
| index-term-range-end | milestone-end | milestone-start | named-content | styled-content
| annotation | article-title | chapter-title | collab | collab-alternatives | comment
| conf-acronym | conf-date | conf-loc | conf-name | conf-sponsor | data-title | date
| date-in-citation | day | edition | email | elocation-id | etal | ext-link | fpage
| gov | institution | institution-wrap | isbn | issn | issn-l | issue | issue-id |
issue-part | issue-title | lpage | month | name | name-alternatives | object-id |
page-range | part-title | patent | person-group | pub-id | publisher-loc | publisher-name
| role | season | series | size | source | std | string-date | string-name | supplement
| trans-source | trans-title | uri | version | volume | volume-id | volume-series
| year | fn | target | xref | sub | sup | x )*