Kholiavko, N. I., and T. Shestakovska. “Methodological Aspects of universities’ R&D Comercialization in Ukraine in the Context of the Quаdruplе HеlÑ–x Model”. Jurnal Perspektif Pembiayaan Dan Pembangunan Daerah, vol. 6, no. 2, Nov. 2018, pp. 265 -76, doi:10.22437/ppd.v6i2.5367.