@article{Vlachkova:NLAA2000,
title = {A {N}ewton-type algorithm for solving an extremal constrained
        interpolation problem},
journal = "Numer. Linear Algebra Appl.",
volume = "7",
pages = "133--146",
year = "2000",
doi = {10.1002/(SICI)1099-1506(200004/05)7:3<133::AID-NLA190>3.0.CO;2-Y},
author = "K. Vlachkova"
}