Extremal rational functions on several arcs of the unit circle with zeros on these arcs
A. L. Lukashov, S. V. Tyshkevich

This publication is cited in the following articles:

1. Alexey Lukashov, Dmitri Prokhorov, “Approximation of sgn $(x)$ ( x ) on Two Symmetric Intervals by Rational Functions with Fixed Poles”, Comput. Methods Funct. Theory, 15:4 (2015), 493  
2. A. L. Lukashov, Springer Proceedings in Mathematics, 13, Approximation Theory XIII: San Antonio 2010, 2012, 221