Numerous collaboration links and projects are vital for our research activity. Those include recent common works with research teams from INéel- and LPMMC-Grenoble, LPS-Orsay, LPN-Marcoussis, Universities of Montpellier, Warsaw, Wroclaw, Regensburg, Prague, Geneva, Erlangen, Oxford and Manchester, IPPAS-Warsaw and Helmholtz-Zentrum, Dresden as well as Georgia-Tech, Atlanta and IMS-NRC, Ottawa.