The MSC harvester obtains Open Mathematics Subject Classification (MSC) data from the zbMATH Open OAI-PMH-API using the Sickle client. The data is written to a csv file. See sample.csv for an example.
The meaning of the columns is the following:
de: Eight digit internal zbMATH identifier (not to confuse with the public zbl identifier in the form Zbl 0910.34036)
msc: MSC of the article
keywors: keywords of the article
title: title of the article
refs: MSCs occouring in the references
By default only colums are exported with all values present.
One can navigate to the corresponding article in the zbMATH open webinterface by prefixing the string https://zbmath.org/?an=0 to it.
For example for de=1209934 navigate to https://zbmath.org/?an=01209934.
In rare cases there are de values below 1000000, if so as manny zeros have to be prefixed so that the final number in the url has eight digits.
To retrive the de from the zbMATH Open website a little trick is required:
One can obtain the de this by clicking on the BibTeX button below the article.
For this example, a BibTeX entry with key zbMATH01209934 will be downloaded.
The last digits after the word zbMATH, i.e., 1209934, are the DE number.