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Puchta, H., Luckinger, R., Yang, X. et al. Nucleotide sequence and secondary structure of apple scar skin viroid (ASSVd) from China. Plant Mol Biol 14, 1065–1067 (1990). https://doi.org/10.1007/BF00019406
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DOI: https://doi.org/10.1007/BF00019406