WASET
    Yolanda Ramírez and  Ángel Tejada and  Agustín Baidez,  Voluntary Information of Intellectual Capital Disclosed Online by Public Spanish Universities.   journal   = {International Journal of Economics and Management Engineering}, [online]. World Academy of Science, Engineering and Technology.
    August 2019, vol. 153(9). 1169 - 1174
    [viewed 16 April 2024]. Available from: https://publications.waset.org/pdf/10010709.