We give the complete solution of the extremal problem posed by N.G. Tchebotaröv in 20th of the last century, and we establish explicit parametric formulae for the extremals.
@article{bwmeta1.element.doi-10_2478_BF02475620, author = {Promarz Tamrazov}, title = {Tchebotar\"ov's extremal problem}, journal = {Open Mathematics}, volume = {3}, year = {2005}, pages = {591-605}, zbl = {1105.30013}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.doi-10_2478_BF02475620} }
Promarz Tamrazov. Tchebotaröv’s extremal problem. Open Mathematics, Tome 3 (2005) pp. 591-605. http://gdmltest.u-ga.fr/item/bwmeta1.element.doi-10_2478_BF02475620/
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