Simulation of Collective Excitations in Long Josephson Junction Stacks Ilhom Rahmonov, Yury Shukrinov, Pavlina Atanasova, Elena Zemlyanaya, Oksana Streltsova, Maxim Zuev, Andrej Plecenik and Akinobu Irie EPJ Web Conf., 173 (2018) 06011 Published online: 14 February 2018 DOI: 10.1051/epjconf/201817306011