1. Central Institute for Nutrition and Food Research, 1980. Compilation of Mass Spectra of Volatile Compounds in Food (T.N.O.), Utrecht.
2. 13C spectra of polycyclic systems;Cory;Organic Magnetic Resonance,1978
3. Ferro, E., Figueredo, A., Alvarenga, N., Velázquez, C., 1995. Antimicrobial activity of Paraguayan medicinal plants. Primer Congreso Paraguayo de Microbiologı́a.
4. Systemic therapy of salivary gland hypofunction;Fox;Journal of Dental Research Spec.,1987
5. Gatti, C., 1985. Enciclopedia Guaranı́-Castellano de Ciencias Naturales y Conocimientos Paraguayos. Arte Nuevo Editores, Asunción, p. 317.