Although some authors claim that the screenplay was filmed, according to Marina Tarkovskaya, Tarkovsky's sister (and wife of Aleksandr Gordon, a fellow student of Tarkovsky during his film school years)
ɔːlðˈoʊ sˌʌm ˈɔːθɚz klˈeɪm ðætðə skɹˈiːnpleɪ wʌz fˈɪlmd, ɐkˈoːɹdɪŋ tə mɚɹˈiːnə tˌɑːɹkəvskˈɑːjə, tɑːɹkˈɑːvskiz sˈɪstɚ ænd wˈaɪf ʌv ɐlˈɛksændɚ ɡˈoːɹdən, ɐ fˈɛloʊ stˈuːdənt ʌv tɑːɹkˈɑːvski dˈʊɹɹɪŋ hɪz fˈɪlm skˈuːl jˈɪɹz