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Siedlecki, Janusz and Zimmermann, Wolfgang and Weissbach, Arthur (1983): Characterization of a prokaryotic topoisomerase I activity in chloroplast extracts of maize. In: Nucleic acids research, Vol. 11: pp. 1523-1536

Zimmermann, Wolfgang and Chen, Shih Min and Bolden, Arthur and Weissbach, Arthur (1980): Mitochondrial DNA Replication Does Not Involve DNA Polymerase alpha. In: The journal of biological chemistry, Vol. 255: pp. 11847-11852