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For
more information about PER
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in general check our our website at
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http://www.physics.umd.edu/perg/
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For
references to the articles in PER on optics
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check
out the AJP resource letter on PER
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by
McDermott and Redish (Oct. ’99)
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http://www.physics.umd.edu/rgroups/
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ripe/papers/rlpre.pdf
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