ɪn ðɪs stˈʌdi hiː kˈɔɪnd ænd dᵻfˈaɪnd ðə tˈɜːm ɡˈɜːt dʒɪnˈɛɾɪk jˈuːs ɹᵻstɹˈɪkʃən tɛknˈɑːlədʒi ænd ɪts vˈɛɹiənts.
In this study  he coined and defined the term GURT - Genetic Use Restriction Technology and its variants.