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Received: 18 September 1998/Accepted: 22 September 1998
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Lee, K., Ahn, J. & Chung, J. Electronic excitations on the alkali-metal (Na,Cs)-adsorbed Si(111)7×7 surfaces . Appl Phys A 68, 115–118 (1999). https://doi.org/10.1007/s003390050864
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DOI: https://doi.org/10.1007/s003390050864