ɪn nˈaɪntiːnhˈʌndɹɪd sˈɛvənti fˈoːɹ bˈʌtʃsteɪbɚ wʌz ɐn ɪnvˈaɪɾᵻd spˈiːkɚɹ æt ðɪ ˌɪntɚnˈæʃənəl kˈɑːŋɡɹəs ʌv mˌæθɪmɐtˈɪʃənz ɪn væŋkˈuːvɚ bˌʌt hiː dɪdnˌɑːt ɡˈɪv ɐ lˈɛktʃɚ ðˈɛɹ.
In 1974 Buchstaber was an Invited Speaker at the International Congress of Mathematicians in Vancouver (but he did not give a lecture there).