Nonresonant Background in Isobaric Models of Photoproduction of η-Mesons on Nucleons.Published in:Russian Physics Journal, 2016, v. 59, n. 3, p. 359, doi. 10.1007/s11182-016-0780-1By:Tryasuchev, V.;Alekseev, B.;Yakovleva, V.;Kondratyeva, A.Publication type:Article