A periodical is a type of serial, defined as a "publication with its own distinctive title, containing a mix of articles ... by more than one contributor, issued ... at regular stated intervals of less than a year, without prior decision as to when the final issue will appear." This includes magazines and journals, but not [[proceedings]]. | A periodical is a type of serial, defined as a "publication with its own distinctive title, containing a mix of articles ... by more than one contributor, issued ... at regular stated intervals of less than a year, without prior decision as to when the final issue will appear." This includes magazines and journals, but not [[proceedings]]. |