Geodesic
Linear interval equations with symmetric solution sets
Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 48 (2008) no. 4, pp. 562-569

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Criteria for symmetry and boundedness are found for the combined solution set of a system of linear algebraic equations with interval coefficients. It is shown that the problem of the best inner interval estimation of a symmetric solution set can be exactly solved by linear programming methods. 
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     author = {L. T. Ashchepkov},
     title = {Linear interval equations with symmetric solution sets},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {562--569},
     publisher = {mathdoc},
     volume = {48},
     number = {4},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_2008_48_4_a1/}
}
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L. T. Ashchepkov. Linear interval equations with symmetric solution sets. Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki, Tome 48 (2008) no. 4, pp. 562-569. http://geodesic.mathdoc.fr/item/ZVMMF_2008_48_4_a1/