A Unified Theory for Real Vs. Complex Rational Chebyshev Approximation on an Interval
Arden Ruttan, Richard S. Varga · Transactions of the American Mathematical Society · 1989
Arden Ruttan, Richard S. Varga, A Unified Theory for Real Vs. Complex Rational Chebyshev Approximation on an Interval, Transactions of the American Mathematical Society, Vol. 312, No. 2 (Apr., 1989), pp. 681-697