search query: @keyword solar energy / total: 15
references: 11-15 / 15
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title | year | author | ||
11. | 1997 | Koljonen, Jukka Antero |
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12. | 1997 | Rikkilä, Ari |
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13. | 1996 | Sainio, Panu |
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14. | 1994 | Lahtinen, Ismo |
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15. | 1992 | Luomala, Jukka |
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