Magnetic and optical studies on polyvinylpyrrolidone thin films doped with rare earth metal salts
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1988 ◽
Vol 33-34
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pp. 286-291
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2015 ◽
Vol 13
(6)
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pp. 1700-1707
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2012 ◽
Vol 356
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pp. 158-164
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1988 ◽
Vol 145
(2)
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pp. 327-330
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