@article{10_4064_sm170_1_2,
     author = {Constantin Costara},
     title = {On the spectral {Nevanlinna{\textendash}Pick} problem},
     journal = {Studia Mathematica},
     pages = {23--55},
     publisher = {mathdoc},
     volume = {170},
     number = {1},
     year = {2005},
     doi = {10.4064/sm170-1-2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/sm170-1-2/}
}