Hi,
These sentences are quite common in articles in scientific journals.
Received July 13, 1988 >> On this day, the journal receives an article written by one or more authors. After receiving the article, a group of (anonymous) referees is set up. The referees are usually colleagues of the author(s) and review the article; this means that they can accept it or reject it. When an article is accepted, the author(s) is(are) often required to make alterations; when this happens, the referees will usually send notes and comments to the author(s).
Revision received July 7, 1989 >> On this day, the journal receives a revised version of the same article sent nearly a year earlier. The revised version needs to take into account all the notes and suggestions received by the referees (otherwise the article will be rejected).
Accepted September 12, 1989 >> The referees accept the revised version. The article can now be published. (... and they lived happily ever after
...)