海量图书期刊资源，随时随地畅享阅读乐趣
Revisiting ‘obsolescence’ and journal article ‘decay’ through usage data: an analysis of digital journal use by year of publicationDavid Nicholas; Paul Huntington; Tom Dobrowolski; Ian Rowlands; Hamid R. Jamali M.; Panayiota Polydoratou · 2005