Sol–gel derived hybrid materials doped with rare earth metal ions
1991 ◽
Vol 154
(1)
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pp. 23-35
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Keyword(s):
2001 ◽
Vol 371
(1)
◽
pp. 5-8
Keyword(s):
2017 ◽
Vol 29
(8)
◽
pp. 1673-1676
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Keyword(s):
Keyword(s):
2019 ◽
Vol 223
◽
pp. 260-263
Keyword(s):