GRAFOVA, G., and S. SHAKHVATOVA, “METHODICAL APPROACHES TO FORMATION OF ECONOMIC AND FINANCIAL CYCLES OF WORKING CAPITAL”, Статьи, Среднерусский вестник общественных наук, 13/3 (2018), 185-98, https://doi.org/10.22394/2071-2367-2018-13-3-185-198.