1)Nihon Kaiji Kyokai, “Tentative manual for procedure for approval of ballast water management systems that make use of active substances(G9)”,(http://www.classnk.or.jp/hp/pdf/activities/statutory/ballastwater/imo/g9_manual_ver1.pdf)(accessed 2015.11.25)(Japanese)
2)M. Gregg, G. Rigby and G. M. Hallegraeff, “Review of two decades of progress in the development of management options for reducing or eradicating phytoplankton, zooplankton and bacteria in ship's ballast water”, Aquatic Invasions, 4, 521-565(2009)