search query: @keyword strength / total: 16
references: 13-16 / 16
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title | year | author | ||
13. | 1998 | Lehtinen, Maaria |
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14. | 1996 | Tolppanen, Pasi |
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15. | 1991 | Koponen, Simo |
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16. | 1988 | Toratti, Tomi |
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