Dmitry Yu. Korulkin and  Raissa A. Muzychkina,  Technologies of Acylation of Hydroxyanthraquinones.   journal   = {International Journal of Chemical and Molecular Engineering}, [online]. World Academy of Science, Engineering and Technology.
    June 2014, vol. 91(7). 628 - 630
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/9998758.