When you kindly describe about using DDBJ on academic papers etc., in general, please use the latest article for DDBJ on Nucleic Acids Res. Database issue as a reference.

However, please note followings.

In case of citation for each sequence record
In general, it is enough to describe accession number for it in your publication.
If you discuss about the data in detail, please use primary citation for the data as a reference. In case of citation for each service provided at DDBJ
In general, please use original article for each service as a reference.
References:
We would like to acknowledge DDBJ in our publication.
We would like to acknowledge the NIG Supercomputer System in our publication.