ðɪ ˌɛmpˌiːvˈiː ɹᵻdˈʌkʃən wʌz ˌɪndᵻpˈɛndəntli dɪskˈʌvɚd baɪ ˈælbɚt vˈɜːli ænd ðə tˈiːm ʌv hˈænz mˈɪɹwiːn ænd ɹˈuːdɑːlf ʃmˈɪt ɪn nˈaɪntiːnhˈʌndɹɪd twˈɛnti fˈaɪv.
The MPV reduction was independently discovered by Albert Verley and the team of Hans Meerwein and Rudolf Schmidt in 1925.