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@article{MS2_1955__3_165562, author = {CARL HYLT\'EN-CAVALLIUS}, title = {Some extremal problems for trigonometricaland complex polynomials}, journal = {Mathematica Scandinavica}, pages = {5--20}, publisher = {mathdoc}, volume = {3}, year = {1955}, zbl = {0065.30301}, url = {http://geodesic.mathdoc.fr/item/MS2_1955__3_165562/} }
CARL HYLTÉN-CAVALLIUS. Some extremal problems for trigonometricaland complex polynomials. Mathematica Scandinavica, Tome 3 (1955), pp. 5-20. http://geodesic.mathdoc.fr/item/MS2_1955__3_165562/