Access is limited to approved individuals within the organization. Letters Journals Provide rapid publication of preliminary communications of fundamental research. Some journals include letters and short articles of this kind in the same issue as full-length research articles. Letters journals are indexed by indexing services. Conference Papers and Proceedings Conference papers are reports of research that are read at a conference or meeting.
Proceedings are collections of conference papers that are published as a single volume.
Papers presented at conferences tend to be very current and deal with a specific, narrow topic. They may or may not be published after the meeting. Most disciplinary indexing tools index conference papers, as do the two databases, PapersFirst and ProceedingsFirst . Often only the abstract appears in print. Papers that are bound and published as proceedings are more likely to be indexed.