All classes (except the reports class) correspond to one of the Product Specific Scopus APIs.

There are Search APIs and Retrieval APIs. They have in common that the obtained result is cached in a subfolder in ~/.scopus/ on your hard drive. Subsequent analysis becomes much quicker this way. A boolean refresh parameter steers whether this file should be refreshed or not.

Metadata APIs

Two other Metadata APIs, Serial Title Metadata and Subject Classifications, are not implemented yet.