A problem of blocking light rays

DOI10.1023/A:1004974630549zbMath0892.52014OpenAlexW1496556070MaRDI QIDQ1373235

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Publication date: 6 July 1998

Published in: (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1023/a:1004974630549

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