He then began research work at the Castelnuovo Institute of Rome where he was an assistant to Mauro Picone. Jacques-Louis Lions and François Murat write in [) (see also):
Siya at pagkatapos ay nagsimulang magtrabaho sa pananaliksik sa Castelnuovo Institute of Roma kung saan siya ay isang assistant sa Mauro Picone. Jacques-Louis Lions at François Murat sumulat sa [) (tingnan din):