Periodicals are publications which are issued at regular intervals, such as journals, magazines, and newspapers. They are also often referred to as serials. Periodicals usually consist of a collection of articles, which may range from a single page story in a magazine to a 40 page study in a scholarly journal.
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J. Neubert. Proceedings of the Linked Data on the Web Workshop (LDOW2009), Madrid, Spain, April 20, 2009, CEUR Workshop Proceedings, 538, (2009)LDOW2009, April 20, 2009, Madrid, Spain.
A. Rusbridge, и S. Ross. iPRES 2008 Fifth International Conference on Preservation of Digital Objects, British Library, (2008)Joining up and working: Tools and Methods for Digital Preservation, 29-30th September 2008, British Library, London..