From Symmetry to Asymmetry: The Use of Additional Pulses to Improve Protection against Ultrashort Pulses Based on Modal Filtration. - Anton O. Belousov; Evgeniya B. Chernikova; Mariya A. Samoylichenko; Artem V. Medvedev; Alexander V. Nosov; Talgat R. Gazizov; Alexander M. Zabolotsky (Symmetry, 2020)