@article{SMJ2_2009_35_2_a2,
     author = {Klotz, Lutz and Zagorodnyuk, Sergey M.},
     title = {Density of {Polynomials} in the {L^2} {Space} on the {Real} and the {Imaginary} {Axes} and in a {Sobolev} {Space}},
     journal = {Serdica Mathematical Journal},
     pages = {147--168},
     publisher = {mathdoc},
     volume = {35},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_2009_35_2_a2/}
}