Ten years ago Szostak and Pier Luigi Luisi, then at the Swiss Federal Institute of Technology in Zurich, settled an argument by writing a paper together.

十年前绍斯塔克和位于苏黎世的瑞士联邦学院的皮尔·路易吉·路易西，通过共同撰写论文解决了争端。

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Centre-left leader, Pier Luigi Bersani, has backed the front-runner, Franco Marini, as candidate for president.

BBC: Italian MPs fail to choose new president in first vote

During an interview with Pier Luigi Bersani, I asked about his plans for growth.

BBC: Italian election lessons for wider Europe

Pier Luigi Petrillo , UNESCO Working Group Coordinator, Ministry of Agriculture, Food and Forestry.

UNESCO: Intangible Cultural Heritage, A Living Legacy To Safeguard | United Nations Educational, Scientific and Cultural Organization