"Final Report on the Safety Assessment of Steapyrium Chloride and Lapyrium Chloride". International Journal of Toxicology. 10: 87–97. 1991. doi:10.3109/10915819109078624. S2CID208361218.
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"Final Report on the Safety Assessment of Steapyrium Chloride and Lapyrium Chloride". International Journal of Toxicology. 10: 87–97. 1991. doi:10.3109/10915819109078624. S2CID208361218.