Razumovskaya, V. A. “Olonkho ‘Nurgun Botur the Swift’ By Platon Oyunsky As a ‘Strong’ Text of the Yakut Culture”. Journal of History Culture and Art Research, vol. 7, no. 4, Nov. 2018, pp. 363-7, doi:10.7596/taksad.v7i4.1858.