Higuchi et. al, "Behaviors of Several Compounds as Indicators in Lithium Aluminum Hydride Titration of Functional Groups,", 1951

Higuchi et. al, "Behaviors of Several Compounds as Indicators in Lithium Aluminum Hydride Titration of Functional Groups,", 1951, Box: 10, Folder: 50. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124474 Accessed December 25, 2025.