Normal systems with two caustic lines.
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Publication:5922026
DOI10.1364/JOSA.30.000307zbMath66.0940.02OpenAlexW4236494134MaRDI QIDQ5922026
Publication date: 1940
Published in: Journal of the Optical Society of America (Search for Journal in Brave)
Full work available at URL: https://doi.org/10.1364/josa.30.000307
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