search query: @keyword variable frequency drive / total: 3
references: 1-3 / 3
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| title | year | author | ||
| 1. | 2014 | Korhonen, Janne |
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| 2. | 2012 | Kahelin, Petri |
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| 3. | 1980 | Mäkelä, Kari |
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INSSI
| title | year | author | ||
| 1. | 2014 | Korhonen, Janne |
||
| 2. | 2012 | Kahelin, Petri |
||
| 3. | 1980 | Mäkelä, Kari |