ELibM – Electronic Library of Mathematics
Established 1996 — the longest-running and largest open access repository in mathematics.
The Electronic Library of Mathematics contains online journals, article collections, monographs, and other electronic resources in the field of mathematics. All material is in electronic form and access is generally free, except for some periodicals with a »moving wall«, i.e., a certain delay period after which resources become freely available.
Some requirements have to be fullfilled for a journal or proceedings volume to be included in the Electronic Library.