When a preliminary text of two of the sections of the revised Missal was published in 1969, Archbishop Marcel Lefebvre gathered a group of twelve theologians, who, under his direction, wrote a study of the text.
Kada je 1969. izdan preliminarni tekst dviju sekcija revidiranog Misala, nadbiskup Marcel Lefebvre okupio je skupinu od dvanaest teologa, koji su pod njegovim vodstvom, napisali studiju teksta.