Черкас, Ю. В., С. В. Коломиец, and Ю. И. Волощук. “Spectral Analysis of Asteroids Distribution on Semimajor Axis. LS-Method”. Technology Audit and Production Reserves, vol. 6, no. 1(14), Nov. 2013, pp. 44-46, doi:10.15587/2312-8372.2013.19556.