Tolong jelaskan mengenai References dari Sergey Syrtsov (politisi)

R.W. Davies, "The Syrtsov-Lominadze Affair," Soviet Studies, vol. 33, no. 1 (Jan. 1981), pp. 29–50. In JSTOR

Peter Holquist, "'Conduct Merciless Mass Terror': Decossackization on the Don, 1919," Cahiers du Monde russe, vol. 38, no. 1/2(Jan.-June 1997), pp. 127–162. In JSTOR

James Hughes, "Patrimonialism and the Stalinist System: The Case of S. I. Syrtsov," Europe-Asia Studies, vol. 48, no. 4 (June 1996), pp. 551–568. In JSTOR

T. Szamuely, "The Elimination of Opposition between the Sixteenth and Seventeenth Congresses of the CPSU," Soviet Studies, vol. 17, no. 3 (Jan. 1966), pp. 318–338. In JSTOR