Listed below are several databases which index mathematical journals.
Open-access to e-prints in Physics, Mathematics, Computer Science, and Quantitative Biology.
Electronic Journal Center (EJC)
*Use the Mathematics category
*From Search, select the Advanced Search
*From the drop-down boxes, use item title or abstract
*From Narrow by Discipline, select History of Science & Technology and Mathematics
Web of Science
For detailed search techniques, see the PDF in the hyperlink below.