by Ageev, B.G., Gritsuta, A.N., Klimkin, A.V., Kuryak, A.N., Osipov, K.Yu, Ponomarev, Yu.N., Simonova, G.V.
Published in Quantum electronics (Woodbury, N.Y.) (01.01.2017)

by Kuryak, A.N., Tikhomirov, B.A.
Published in Quantum electronics (Woodbury, N.Y.) (01.09.2020)