<!ELEMENT bib (book* )> | |
<!ELEMENT book (title, (author+ | editor+ ), publisher, price )> | |
<!ATTLIST book year CDATA #REQUIRED > | |
<!ELEMENT author (last, first )> | |
<!ELEMENT editor (last, first, affiliation )> | |
<!ELEMENT title (#PCDATA )> | |
<!ELEMENT last (#PCDATA )> | |
<!ELEMENT first (#PCDATA )> | |
<!ELEMENT affiliation (#PCDATA )> | |
<!ELEMENT publisher (#PCDATA )> | |
<!ELEMENT price (#PCDATA )> |