E. Kh. Gimadi, I. A. Rykov, “A randomized algorithm for the vector subset problem with the maximal Euclidean norm of its sum”, Diskretn. Anal. Issled. Oper., 22:3 (2015), 5–17; J. Appl. Industr. Math., 9:3 (2015), 351–357
E. Kh. Gimadi, I. A. Rykov, “Asymptotically optimal approach to the approximate solution of several problems of covering a graph by nonadjacent cycles”, Trudy Inst. Mat. i Mekh. UrO RAN, 21:3 (2015), 89–99; Proc. Steklov Inst. Math. (Suppl.), 295, suppl. 1 (2016), 57–67
E. Kh. Gimadi, A. M. Istomin, I. A. Rykov, O. Yu. Tsidulko, “Probabilistic analysis of an approximation algorithm for the $m$-peripatetic salesman problem on random instances unbounded from above”, Trudy Inst. Mat. i Mekh. UrO RAN, 20:2 (2014), 88–98; Proc. Steklov Inst. Math. (Suppl.), 289, suppl. 1 (2015), 77–87
E. Kh. Gimadi, A. M. Istomin, I. A. Rykov, “On 2-Capacitated Peripatetic Salesman Problem with Different Weight Functions”, Vestn. Novosib. Gos. Univ., Ser. Mat. Mekh. Inform., 14:3 (2014), 3–18
E. Kh. Gimadi, A. M. Istomin, I. A. Rykov, “On $m$-capacitated peripatetic salesman problem”, Diskretn. Anal. Issled. Oper., 20:5 (2013), 13–30; J. Appl. Industr. Math., 8:1 (2014), 40–52
E. Kh. Gimadi, A. V. Pyatkin, I. A. Rykov, “On polynomial solvability of some vector subset problems in Euclidean space with fixed dimension”, Diskretn. Anal. Issled. Oper., 15:6 (2008), 11–19; J. Appl. Industr. Math., 4:1 (2010), 48–53
I. A. Rykov, “On comparison of the strip packing problem with a certain project scheduling problem”, Diskretn. Anal. Issled. Oper., 15:4 (2008), 57–73
8.
E. Kh. Gimadi, Yu. V. Glazkov, I. A. Rykov, “The vector subset problem with integer coordinates in Euclidean space with the maximum sum”, Diskretn. Anal. Issled. Oper., 15:4 (2008), 30–43; J. Appl. Industr. Math., 3:3 (2009), 343–352