DOI and Journal
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A digital object identifier (DOI) is a serial code used to uniquely identify objects. The DOI system is particularly used for electronic documents such as journal articles. The DOI system began in 2000. A digital object identifier (DOI) is a unique alphanumeric string assigned by a registration agency (the International DOI Foundation) to identify content and provide a persistent link to its location on the Internet. The publisher assigns a DOI when your article is published and made available electronically.

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A journal is a book or computer file in which monetary transactions are entered the first time they are processed. This journal lists transactions in chronological sequence by date prior to a transfer of the same transactions to a ledger in the process of bookkeeping.

A journal entry is a formal accounting entry used to identify a business transaction. The entry itemizes accounts that are debited and credited, and should include some description of the reason for the entry, as well as the date. If properly documented, journal entries provide an excellent audit trail for anyone investigating the accounting records of an entity.