Konstantza Tonova and  Ivan Svinyarov and  Milen G. Bogdanov,  Biocompatible Ionic Liquids in Liquid – Liquid Extraction of Lactic Acid: A Comparative Study.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    March 2015, vol. 100(4). 558 - 562
    [viewed 09 May 2024]. Available from: https://publications.waset.org/pdf/10001024.