search query: @keyword mobile telephone system / total: 5
references: 2-5 / 5
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title | year | author | ||
2. | 1993 | Huotelin, Ilkka |
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3. | 1991 | Kulju, Anssi |
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4. | 1988 | Björk, Petri |
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5. | 1986 | Pietilä, Harri |
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