search query: @keyword optical / total: 6
references: 5-6 / 6
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title | year | author | ||
5. | 2002 | Kärkäs, Reijo |
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6. | 1997 | Piira, Juha |
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INSSI
title | year | author | ||
5. | 2002 | Kärkäs, Reijo |
||
6. | 1997 | Piira, Juha |