Two-photon exchange in elastic electron scattering on hadronic systems - V. M. Dzhahan; Ya. V. Pirko; Yu. Buziashvili; S. H. Plokhovska; M. Borova; A. I. Yemets; N. V. Mazur; O. A. Kapush; V. O. Yukhymchuk (Ukrainian Journal of Physics, 2022)