Leal Silva, Jean Felipe; Grekin, Rebecca; Mariano, Adriano Pinto; Maciel Filho, Rubens (2018). "Making Levulinic Acid and Ethyl Levulinate Economically Viable: A Worldwide Technoeconomic and Environmental Assessment of Possible Routes" (in en). Energy Technology6 (4): 613–639. doi:10.1002/ente.201700594. பன்னாட்டுத் தர தொடர் எண்:2194-4296.
Leal Silva, Jean Felipe; Grekin, Rebecca; Mariano, Adriano Pinto; Maciel Filho, Rubens (2018). "Making Levulinic Acid and Ethyl Levulinate Economically Viable: A Worldwide Technoeconomic and Environmental Assessment of Possible Routes" (in en). Energy Technology6 (4): 613–639. doi:10.1002/ente.201700594. பன்னாட்டுத் தர தொடர் எண்:2194-4296.