Ageev, A. A.; Gimadi, Eh. Kh.; Kurochkin, A. A. A polynomial algorithm for solving the facility location problem on a chain network with identical plant production capacities. (Russian) Zbl 1249.90295 Diskretn. Anal. Issled. Oper. 16, No. 5, 3-18 (2009). MSC: 90C35 90B80 PDF BibTeX XML Cite \textit{A. A. Ageev} et al., Diskretn. Anal. Issled. Oper. 16, No. 5, 3--18 (2009; Zbl 1249.90295)
Ageev, A. A.; Baburin, A. E.; Gimadi, Eh. Kh. A polynomial algorithm with an accuracy estimate of 3/4 for finding two nonintersecting Hamiltonian cycles of maximum weight. (Russian) Zbl 1249.05232 Diskretn. Anal. Issled. Oper., Ser. 1 13, No. 2, 11-20 (2006). MSC: 05C45 05C85 PDF BibTeX XML Cite \textit{A. A. Ageev} et al., Diskretn. Anal. Issled. Oper., Ser. 1 13, No. 2, 11--20 (2006; Zbl 1249.05232)