Transformation of spectra of refraction index fluctuations in axisymmetric supersonic jet with the increase in the distance from the nozzleDmitrii Marakasov, Valentina Sazanovich, Ruvim Tsvyk and Andrei ShesterninMATEC Web Conf., 115 (2017) 02005DOI: https://doi.org/10.1051/matecconf/201711502005