Convert of ISBN-10s to 13 with a check digit of 10

altmetric / identifiers

Collection of utilities related to the extraction, validation and normalization of various scholarly identifiers.

https://rubygems.org/gems/identifiers

MIT License

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Convert of ISBN-10s to 13 with a check digit of 10 #4

Closed mudge closed 7 years ago

mudge commented 7 years ago

When converting an ISBN-10 to an ISBN-13, we missed an important special case when calculating the new check digit: when the calculated digit is 10, it should be replaced with a 0.