For example: 1999-2001. You could also use "-1987" for everything published in and before 1987 or "2008-" for everything published in 2008 and after.
ελληνικά (Greek, Modern [1453- ])
Bahasa Indonesia (Indonesian)
Norsk bokmål (Norwegian bokmål)
Norsk nynorsk (Norwegian nynorsk)
The system was implemented with technical support of the Library, Open University of Sri Lanka, Contact: 011-2690760