Jung Hee Cheon from July to August;
Arnold Neumaier from August to December;
Khoa Ta Toa Nguyen until October;
Peter Tang, from June to July;
Yong Sue Song from July to August.
Fabrice Mouhartem
Date: February 2015–July 2015
Institution: ENS de Lyon
Supervisor: Benoît Libert
Alice Pellet-Mary
Supervisor: Damien Stehlé
Andrada Popa
Date: July 2015–September 2015
Institution: Technical University of Cluj-Napoca (Roumanie)
Supervisor: Nicolas Brisebarre
Pablo Rotondo
Date: March 2015–June 2015
Institution: Universidad de la Republica Uruguay (Uruguay)
Supervisor: Bruno Salvy
Weiqiang Wen
Institution: SCNU, China