You may have a citation with an out-of-date journal name; periodical names often change over time. If you cannot find the journal/periodical name in our catalog, try looking in MathSciNet. MathSciNet's Journal Database contains journal names and all of their name changes; click on the "Journals" tab to search by journal title or abbreviation. If you are unable to locate it in that database,the Union List of Serials is the next best source. Volumes of the Union List are located behind the service desk in the Mathematics Library. Please feel free to ask a library staff member search through them for you if you find them confusing or difficult to search.
This issue is related to the problem above. If the citation that you have is old (10-20 years) and you are having problems searching because you are unsure whether the periodical title is still the same, there are several places that you can look to verify the title. Again, MathSciNet's Journal Database is a good place to start because it has all of the name changes in its database. If you are unable to locate the title there, you may want to try the Zentralblatt MATH database. Its aims and scope are similar, but it may have different titles indexed. Another database you may want to try if neither of the above work out is the Jahrbuch Project. It is similar to both MathSciNet and Zentralblatt MATH in terms of search strategies but may have a title you cannot find elsewhere. Finally, if all else fails, come to the service desk and ask a library staff member to help you find it. We are alwayshappy to do this!