ɪn nˈaɪntiːnhˈʌndɹɪd sˈɛvənti wˈʌn hiː pˈʌblɪʃt vˈeɪfəntwˌɪntɪɡ dʒˈɑːɹ vlˈɑːms bᵻwˈɛdʒɪŋ, pˈɑːɹt hˈɪstɚɹi ʌvðə flˈɛmɪʃ nˈæʃənəlˌɪst mˈuːvmənt, pˈɑːɹt ˌɔːɾoʊbaɪˈɑːɡɹəfi .
In 1971 he published Vijfentwintig Jaar Vlaamse Beweging, part history of the Flemish nationalist movement, part autobiography .