@article{TIMM_2011_17_3_a15,
     author = {E. E. Ivanko},
     title = {Sufficient stability conditions in the traveling salesman problem},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {155--168},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2011_17_3_a15/}
}