@article{SM_2011_202_12_a4,
     author = {A. Mart{\'\i}nez-Finkelshtein and E. A. Rakhmanov and S. P. Suetin},
     title = {Variation of the equilibrium energy and the $S$-property of stationary compact sets},
     journal = {Sbornik. Mathematics},
     pages = {1831--1852},
     publisher = {mathdoc},
     volume = {202},
     number = {12},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2011_202_12_a4/}
}