Bilingual Subject-based Information Retrieval in NECLIB2 Digital Library

In this paper we present our work on bilingual subject-based information retrieval in a real world digital library, called NECLIB2, which complements a classic open shelf library that includes around 50,000 materials (many of them being very rare) that are books and e-books, periodicals, audio and video CDs and DVDs, video tapes, scanned microfiche etc., and more than 18,000 items are audio recordings with classical music (in course of digitization).