OpenAccessLibrary(OALib)是一个以开放访问元数据库为基础的搜索引擎，它提供了超过5,710,335篇开放源代码论文，涉及数学、物理、化学、人文、工程、生物、材料、医学和人文科学，所有论文都可以免费下载。 Open Access Library (www.oalib.com) is an academic search engine and publisher. You can download research papers for free and submit your paper to it. It is a shared academic database.