• https://publications.bof.fi/handle/10024/44872
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• https://publications.bof.fi/handle/10024/44814
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• https://publications.bof.fi/handle/10024/44821
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• https://publications.bof.fi/handle/10024/45218
• https://publications.bof.fi/handle/10024/45219
• https://publications.bof.fi/handle/10024/45699
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• https://publications.bof.fi/handle/10024/44822
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• https://publications.bof.fi/handle/10024/45666
• https://publications.bof.fi/handle/10024/45700
• https://publications.bof.fi/handle/10024/44871