Document:

It is considered as document any support, be it printed or not, possible to be described bibliographically. Within the context of the LILACS methodology, a document can be: a collection of monograph, a monograph, a chapter of a monograph, a thesis, dissertation, a chapter of a thesis, dissertation, an article of a journal, a report, a paper presented in a scientific meeting, a film, a tape recording and a nonmusical sound record.

Conventional Document:

Work/Informational item published and distributed through the formal publication channels(commercial, governmental or academic editors).

Non-conventional document:

Work/Informational item issued in an informal way. It is not published formally, this is, does not have a responsible publisher, is usually published with a limited number of copies, is not standardized, do not follow the formal publication and distribution channels and, for this characteristics, can not beconsidered as a conventional document.