Geodesic
Support of the extremal measure in a vector equilibrium
Sbornik. Mathematics, Tome 197 (2006) no. 8, pp. 1205-1221

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A generalization of the Mhaskar–Saff functional is obtained for a vector equilibrium problem with an external field. As an application, the supports of the equilibrium measures are found in a special vector equilibrium problem with Nikishin matrix. Bibliography: 13 titles. 
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     author = {M. A. Lapik},
     title = {Support of the extremal measure in a vector equilibrium},
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     volume = {197},
     number = {8},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2006_197_8_a5/}
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M. A. Lapik. Support of the extremal measure in a vector equilibrium. Sbornik. Mathematics, Tome 197 (2006) no. 8, pp. 1205-1221. http://geodesic.mathdoc.fr/item/SM_2006_197_8_a5/