ScienceDirect is the world's leading source for scientific, technical, and medical research. Explore journals, books and articles, including over 3.3 million open access articles.
Emerald Insight provides seamless access to high-quality, impactful journals, books, case studies, and a growing collection of open access content to a global audience.
SpringerLink is the world's most comprehensive online collection of scientific, technological and medical journals, books and reference works.
One of the largest and most authoritative collections of online journals, books, and research resources, covering life, health, social, and physical.