Asada, K., Sugimoto, K., Oka, A., Takanami, M., & Hirota, Y. (1982). Structure of replication origin of the Escherichia coli K-12 chromosome: The presence of spacer sequences in the ori region carrying information for autonomous replication.

Asada, K., K. Sugimoto, A. Oka, M. Takanami, and Y. Hirota. Structure of Replication Origin of the Escherichia Coli K-12 Chromosome: The Presence of Spacer Sequences in the Ori Region Carrying Information for Autonomous Replication. 1982.

Asada, K., et al. Structure of Replication Origin of the Escherichia Coli K-12 Chromosome: The Presence of Spacer Sequences in the Ori Region Carrying Information for Autonomous Replication. 1982.