基于使用角度的商业数据库开放获取资源再调查—

张春峰

Re-investigation on Open Access Resource of Commercial Databases Based on the Use Angle——Taking Elsevier as an Example

Zhang Chunfeng

Journal of Modern Information . 2014, (8): 73 -77 . DOI: 10.3969/j.issn.1008-0821.2014.08.013