1. AOCS Official Method Cd 3d-63: Acid Value In: AOCS. 6. ed. Official methods and recommended practices of the American Oil Chemists' Society. Champaign: American Oil Chemists' Society, 2009. ISSN 2177-4420. https://www.infoteca.cnptia.embrapa.br/infoteca/bitstream/doc/1005866/1/CIT14.pdf. Acessed: 02. Feb.2021.
2. ASTM D4052-18a, Standard Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter, ASTM International, West Conshohocken, PA, 2018,https://www.astm.org/Standards/D4052. Acessed: 02. Feb.2021.
3. ASTM D7042-21, Standard Test Method for Dynamic Viscosity and Density of Liquids by Stabinger Viscometer (and the Calculation of Kinematic Viscosity), ASTM International, West Conshohocken, PA, 2021, https://www.astm.org/Standards/D7042. Acessed: 02. Feb.2021.
4. Belmokhtar, N., Ben Allal, L., Lamrani, S., 2016. Effect of Na2SiO3/NaOH mass ratio on the development of structure of an industrial waste-based geopolymer. J. Mater. Environ. Sci. 7, 390–396. http://www.jmaterenvironsci.com/Document/vol7/vol7_N2/42-JMES-Belmokhtar-2016.pdf . Acessed: 02. Feb.2021.
5. Biodiesel production from Jatropha curcas L. oil using Lemna perpusilla Torrey ash as heterogeneous catalyst;Chouhan;Biomass Bioenergy,2013