Investigations on the excited states of Eu2+ in CaF2-and SrF2-crystals by two-photon absorption spectroscopy
1977 ◽
Vol 27
(4)
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pp. 289-296
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1985 ◽
Vol 82
(3)
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pp. 1115-1134
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1992 ◽
Vol 117
(1-4)
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pp. 565-568
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2018 ◽
Vol 20
(30)
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pp. 19922-19931
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