MathSciNet - is the primary search tool for finding articles, conference proceedings, reviews, and journal articles in the field of mathematics.
Web of Science - covers highly used and highly cited scholarly materials in science back to 1908. Web of Science also indexes the social science and arts and humanities, making it a great tool for finding scholarly materials across multiple diciplines.
Google Scholar -is Google's searching across scholarly journals and books, and is great for searching across multiple disciplines.
Directory of Open Access Journals: Mathematics - The aim of the Directory of Open Access Journals is to increase the visibility and ease of use of open access scientific and scholarly journals thereby promoting their increased usage and impact. DOAJ journals are high quality, yet freely available.Check for their peer-review status on a case-by-case basis.
arXiv is a great resource for up-to-the-minute articles (pre-prints) across the sciences. Note that these articles are moderated, but not peer-reviewed (yet)
Getting BibTex Citations
Getting BibTex citations out of MathSciNet:
Search for and navigate to the item you want.
Find the dropdown menu near the upper left hand corner of the page.
Choose "BibTex" from the menu. The BibTex will appear.
Copy the citation and paste it into your BibTex citation management tool.
Getting BibTex citations out of Web of Science:
Search for and navigate to the item(s) you want in Web of Science.
Check the boxes to the items you want.
Click "Add to Marked List" located above the results list.
Click "Marked List" towards the upper center of the page, under the green banner.
Under Step 2., select "BibTex" under the "Other Reference Software" drop down.
Click "Save to File" and save the item to your computer.
Open the file within your BibTex citation management tool.
Getting BibTex citations out of Google Scholar:
Click on "Scholar Preferences" to the right of the search box in Google Scholar.
At the bottom of the page, choose "BibTex" from the dropdown next to "Show links to import citations into"
Click "Save Preferences"
Now you will see a link to "Import into BibTex" at the bottom of each item. Click that link to get the BibTex.
Copy and paste the BibTex into your citation management tool.