search query: @instructor Penttinen, Ilkka / total: 12
references: 11-12 / 12
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| title | year | author | ||
| 11. | 2009 | Pulkkinen, Heikki Tapio |
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| 12. | 2007 | Haavisto, Heikki |
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INSSI
| title | year | author | ||
| 11. | 2009 | Pulkkinen, Heikki Tapio |
||
| 12. | 2007 | Haavisto, Heikki |