search query: @keyword prepaid / total: 5
references: 4-5 / 5
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title | year | author | ||
4. | 2002 | Loimuneva, Tero |
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5. | 1999 | Järvinen, Oula |
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INSSI
title | year | author | ||
4. | 2002 | Loimuneva, Tero |
||
5. | 1999 | Järvinen, Oula |