World Health Organization (WHO). (2013). Guidelines for efficacy testing of mosquito repellents for human skin. WHO Press, Geneva. (Provides standardized testing methodologies for repellents; historical data on various compounds including dibutyl succinate would be evaluated under such frameworks, though it may not be specifically listed in recent editions).
U.S. Environmental Protection Agency (EPA). Pesticide Registration. (Lists registered active ingredients for repellents. Dibutyl succinate is not a currently registered active ingredient for this use in the US, indicating its diminished status). https://www.epa.gov/insect-repellents
Centers for Disease Control and Prevention (CDC). (2023). Insect Repellents: Protection Against Mosquitoes, Ticks, and Other Arthropods. (Recommendations focus on DEET, Picaridin, IR3535, Oil of Lemon Eucalyptus/PMD; dibutyl succinate is not recommended, reflecting its historical/obsolete status). https://www.cdc.gov/ncezid/dvbd/about/prevent-bites.html
The Pesticide Manual. (Various Editions). British Crop Production Council (BCPC). (A comprehensive reference work on pesticides, including historical insecticides and repellents. Entries for dibutyl succinate would detail its chemistry, properties, toxicology, and historical uses as a repellent).
Fradin, M. S., & Day, J. F. (2002). Comparative efficacy of insect repellents against mosquito bites. New England Journal of Medicine, 347(1), 13-18. (Seminal study comparing efficacy and duration of protection; established DEET as gold standard, likely did not include or found dibutyl succinate inferior).
National Pesticide Information Center (NPIC). (General information on repellents and specific chemical profiles). http://npic.orst.edu/ (While a secondary source, NPIC synthesizes information from primary sources like EPA registration documents and peer-reviewed literature. Information on historical/obsolete repellents like dibutyl succinate may be found here, citing original studies).
Compendium of Pesticide Common Names. https://www.alanwood.net/pesticides/ (Provides chemical information and regulatory status; entry for dibutyl succinate would confirm its historical use and lack of current major registration).