Cooperation with Sylvie Roelly and Alexander Zass.
Last visit in April 2019. Invited talk given at the Potsdam Research Seminar in Probability:
Existence of limiting correlation functions and their cluster representation

Related Preprint: Penrose-stable Interactions in Classical Statistical Mechanics

September 2019, by the XI International Conference of Mathematical Physics in Armenia,  Stochastic and analytic methods in Mathematical Physics. From left to right: H. Zessin, S. Poghosyan, S. Frigio