Higuchi et. al, "Improved Delivery through Biological Membranes.   1. Synthesis and Properties of 1-Methyl-1,6-dihydropyridine-2-carbaldoxime Chloride,", 1976, Box: 10, Folder: 157. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124581 Accessed May 18, 2024.