Check of the structure in photon pairs spectra at the invariant mass of about 38 MeV/c2Khachik Abraamyan, Chris Austin, Mircea Baznat, Konstantin Gudima, Mikhail Kozhin, Sergey Reznikov and Alexander SorinEPJ Web Conf., 204 (2019) 08004DOI: https://doi.org/10.1051/epjconf/201920408004