The Peronist victory in the 1993 midterm elections allowed him to persuade Alfonsin (by then leader of the opposition party UCR) to sign the Pact of Olivos for the 1994 amendment of the Argentine Constitution.. 
Archer John Porter Martin jẹ́ onímọ̀ sáyẹ́ńsì tó gba ẹbun Nobel ninu Kemistriitọkasi àwọn ẹlẹ́bùn Nobel ninu Kemistriàwọn ẹlẹ́bùn Nobel ará Britani.. 