Geodesic
Integral Estimates of Lengths of Level Lines of Rational Functions and Zolotarev's Problem
Matematičeskie zametki, Tome 94 (2013) no. 3, pp. 331-337

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Integral estimates of lengths of level lines (lemniscates) of rational functions of a complex variable are obtained. These estimates are related to the problem of separation of compact sets by rational functions and to Zolotarev's problem.
Keywords: integral estimate, rational function, separation of compact sets. 
V. I. Danchenko. Integral Estimates of Lengths of Level Lines of Rational Functions and Zolotarev's Problem. Matematičeskie zametki, Tome 94 (2013) no. 3, pp. 331-337. http://geodesic.mathdoc.fr/item/MZM_2013_94_3_a1/
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