MathSciNet, from the American Mathematical Society, provides abstracts from mathematical journals, books, conference proceedings, theses, and technical reports indexes.
Scholarly journals and popular science magazines that support research and instruction in science, technology, engineering, and math.
RefWorks is a web-based bibliography and reference manager that allows you to create your own personal database by importing references from text files or online databases and other various sources. You can use these references in writing papers and automatically format the paper and the bibliography in seconds.