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Kimura, Yasuo; Yoshinari, Takashi; Koshino, Hiroyuki; Fujioka, Shozo; Okada, Katsuhide; Shimada, Atsumi (2014). "Rubralactone, Rubralides A, B and C, and Rubramin Produced by Penicillium rubrum". Bioscience, Biotechnology, and Biochemistry71 (8): 1896–901. PMID17690484. doi:10.1271/bbb.70112.