Bergsma, J. E. (1995). Late complications using poly lactide osteosyntheses in vivo and in vitro tests. Rijksuniversiteit te Groningen.
Lua i Stíl Chicago (17ú heag.)Bergsma, Jan Eelco. Late Complications Using Poly Lactide Osteosyntheses in Vivo and in Vitro Tests. Netherlands: Rijksuniversiteit te Groningen, 1995.
Lua MLA (8ú heag.)Bergsma, Jan Eelco. Late Complications Using Poly Lactide Osteosyntheses in Vivo and in Vitro Tests. Rijksuniversiteit te Groningen, 1995.
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