ɪn nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi hiː ɹᵻsˈiːvd ɐn ˈɑːnɚɹˌɛɹi dˈɑːktɚɹˌeɪt fɹʌmðə fˈækəlti ʌv mˌæθɪmˈæɾɪks ænd sˈaɪəns æɾ ʌpsˈɑːlə jˌuːnɪvˈɜːsᵻɾi, swˈiːdən.
In 1980 he received an honorary doctorate from the Faculty of  Mathematics and Science at Uppsala University, Sweden.