1. Urea inclusion compounds of fatty acids;Schlenk;Prog. Chem. Fats Other Lipids,1954
2. Inclusion Compounds;Frank;J. Pharm. Sci.,1975
3. F. Bengen, W. Schlenk, Verfahren zur Abtrennung aliphatischer Verbindungen aus solche enthaltenden Gemischen, DE 875658C, 1940. https://worldwide.espacenet.com/patent/search/family/006956665/publication/DE875658C?q=DE875658C (accessed January 8, 2024).
4. Crystalline adducts of urea with linear aliphatic compounds;Zimmerschied;Ind. Eng. Chem.,1950
5. The crystal structure of the urea–hydrocarbon complexes;Smith;Acta Crystallogr.,1952