1. A. I. Serdyukov, in Controlled Systems. Issue 27: Methods of Integer Optimization (Inst. Matem. Sibirsk. Otdel. AN SSSR, Novosibirsk, 1987), pp. 79–87 [in Russian].
2. E. Kh. Gimadi, in Optimization Methods and Their Applications. Proc. 12th Baikal Internat. Conf. (Irkutsk, 2001), Vol. 1, pp. 117–124 [in Russian].
3. A. E. Baburin and E. Kh. Gimadi, Diskretn. Anal. Issled. Oper. Ser. 1 9(4), 23 (2002).
4. A. A. Barvinok, E. Kh. Gimadi, and A. I. Serdyukov, in The Traveling Salesman Problem and Its Variations, Ed. by A. Punnen and G. Gutin (Kluwer, Dordrecht, 2002), pp. 585–608.
5. S. P. Fekete, Simplicity and Hardness of the Maximum Traveling Salesman Problem under Geometric Distances. Tech. Rep. 98.329 (Center Appl. Comp. Sci., Köln, 2006).