search query: @instructor Pitkänen, Jukka / total: 3
references: 1-3 / 3
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title | year | author | ||
1. | 2014 | Helelä, Markus |
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2. | 2003 | Suomalainen, Pekka |
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3. | 1993 | Taipale, Jarmo |
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