Optical properties of oxides of the rare earth elements
1968 ◽
Vol 8
(3)
◽
pp. 410-414
◽
2017 ◽
1967 ◽
Vol 22
(4)
◽
pp. 551-555
◽
1962 ◽
Vol 18
(9)
◽
pp. 1127-1153
◽
1981 ◽
Vol 45
(12)
◽
pp. 2349-2358
◽
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