Isomer ratios and mean angular momenta of primary 97Nb fragments at 235U and 238U photofission - V. O. Zheltonozhskyi; A. M. Savrasov; K. M. Solodovnyk; V. A. Pliuiko; O. M. Horbachenko; O. I. Davydovska (Ukrainian Journal of Physics, 2017)