Higuchi et. al, "Unexpectedly Rapid Esterification of Nitrite Applied to the Determination of Nitrite in Water,", 1978, Box: 11, Folder: 134. Personal papers of Takeru Higuchi, PP 359. University of Kansas. Kenneth Spencer Research Library. https://archives.lib.ku.edu/repositories/3/archival_objects/124768 Accessed December 30, 2024.