@article{GDZPPN002360446,
title = {An extremal problem for polynomials with a prescribed value at a given point of the real axis.},
journal = {Mathematica Scandinavica},
volume = {67},
year = {1990},
pages = {130-140},
zbl = {0686.30001},
url = {http://dml.mathdoc.fr/item/GDZPPN002360446}
}
Wirths, Karl-Joachim. An extremal problem for polynomials with a prescribed value at a given point of the real axis.. Mathematica Scandinavica, Tome 67 (1990) pp. 130-140. http://gdmltest.u-ga.fr/item/GDZPPN002360446/