European Physical Journal A European Physical Journal A, EDP Sciences, 2020, 56 (11), pp.289. ⟨10.1140/epja/s10050-020-00298-3⟩ The European Physical Journal A The European Physical Journal A, Springer, 2020, 56 (11), pp.289. ⟨10.1140/epja/s10050-020-00298-3⟩ Eur.Phys.J.A Eur.Phys.J.A, 2020, 56 (11), pp.289. ⟨10.1140/epja/s10050-020-00298-3⟩