In France
V. Rivasseau,
Laboratoire de physique théorique, Batiment 210, Université Paris-Sud,
F-91405 Orsay Cedex
vincent.rivasseau@gmail.com

In Russia
Mikhail Katanaev,
The Steklov Mathematical Institute of Russian Academy of Sciences
Gubkina str. 8, 119991, Moscow, Russia
katanaev@mi.ras.ru