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\bibitem{Kaurova_etal2004} Kaurova NS, Finkel MI, Maslennikov SN, Vahtomin YB, Antipov SV, Smirnov KV, et al. Submillimeter mixer based on YBa$_{2}$Cu$_{3}$O$_{7-x}$ thin film. In: Proc. 1-st conf. Fundamental problems of high temperature superconductivity. Moscow-Zvenigorod; 2004. 291.

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