Monitoring the escape of transgenic oilseed rape around Japanese ports and roadsidesHikaru Saji, Nobuyoshi Nakajima, Mitsuko Aono, Masanori Tamaoki, Akihiro Kubo, Seiji Wakiyama, Yoriko Hatase and Masato NagatsuEnviron. Biosafety Res., 4 4 (2005) 217-222DOI: https://doi.org/10.1051/ebr:2006003