1. Bernoulli Institute of Mathematics, Computer Science and Artificial Intelligence, University of Groningen, Groningen, the Netherlands A.C.D.van.Enter@rug.nl
2. Skolkovo Institute of Science and Technology, Moscow, Russia; Aix Marseille Univ, Universite de Toulon, CNRS, CPT, Marseille, France; Inst. of the Information Transmission Problems, RAS, Moscow, Russia senya.shlosman@univ-amu.frshlos@iitp.ru