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YU, Li; Dominik MUNZAR; A. V. BORIS; P. YORDANOV; Jiří CHALOUPKA; Th. WOLF; C. T. LIN; B. KEIMER a C. BERNHARD. Evidence for Two Separate Energy Gaps in Underdoped High-Temperature Cuprate Superconductors from Broadband Infrared Ellipsometry. Physical Review Letters. USA: The Americal Physical Society, 2008, roč. 100, č. 17, s. 177004-177007. ISSN 0031-9007.Podrobněji: https://is.muni.cz/publication/771445/cs