Description: Zentralblatt MATH (ZBMATH) is the world's most complete and longest running abstracting and reviewing service in pure and applied mathematics. The ZBMATH database contains about 3 million bibliographic entries with reviews or abstracts drawn from more than 3,500 journals and 1,100 serials and covers the period from 1868 to present by the recent integration of the Jahrbuch database (JFM).Reviews are presently written by about 6,000 active experts from all over the world. The entries are classified according to the Mathematics Subject Classification Scheme (MSC 2010).