Piotr Podlipniak,  Tonal Pitch Structure as a Tool of Social Consolidation.   journal   = {International Journal of Humanities and Social Sciences}, [online]. World Academy of Science, Engineering and Technology.
    August 2015, vol. 103(7). 2498 - 2501
    [viewed 19 April 2024]. Available from: https://publications.waset.org/pdf/10002338.