fɹʌm nˈaɪntiːnhˈʌndɹɪd sˈɛvənti tə nˈaɪntiːnhˈʌndɹɪd sˈɛvənti fˈoːɹ hiː wʌz ɹᵻsˈɜːtʃ fˈɛloʊ æt ðə fɹˈɛntʃ nˈæʃənəl sˈɛntɚ fɔːɹ saɪəntˈɪfɪk ɹᵻsˈɜːtʃ ænd dˈʊɹɹɪŋ nˈaɪntiːnhˈʌndɹɪd sˈɛvənti fˈaɪv hiː hˈɛld ɐ vˈɪzɪɾɪŋ pəzˈɪʃən æt kwˈiːnz jˌuːnɪvˈɜːsᵻɾi æt kˈɪŋstən ɪn kˈænədə.
From 1970 to 1974 he was research fellow at the French National Centre for Scientific Research and during 1975 he held a visiting position at Queen's University at Kingston in Canada.