hiː hɐz hˈɛld vˈɪzɪɾɪŋ pəzˈɪʃənz æt jˌuːnɪvˈɜːsᵻɾiz ɪn pˈæɹɪs nˈaɪntiːnhˈʌndɹɪd sˈɛvənti fˈaɪv, jˈuːtɹɛçt nˈaɪntiːnhˈʌndɹɪd sˈɛvənti sˈɛvən, nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi, kˈeɪmbɹɪdʒ nˈaɪntiːnhˈʌndɹɪd sˈɛvənti nˈaɪn ˈeɪɾi, sˈɪdni nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi tˈuː, mˌɑːntɹɪˈɔːl nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi θɹˈiː, ænd pˈɜːθ nˈaɪntiːnhˈʌndɹɪd nˈaɪnti fˈoːɹ.
He has held visiting positions at universities in Paris (1975), Utrecht (1977, 1980), Cambridge (1979–80), Sydney (1982), Montreal (1983), and Perth (1994).