@article{JCA_2014_21_3_JCA_2014_21_3_a8,
     author = {G. A. Mu\~noz-Fern\'andez and D. Pellegrino and J. B. Seoane-Sep\'ulveda and A. Weber},
     title = {Supremum {Norms} for {2-Homogeneous} {Polynomials} on {Circle} {Sectors}},
     journal = {Journal of convex analysis},
     pages = {745--764},
     publisher = {mathdoc},
     volume = {21},
     number = {3},
     year = {2014},
     url = {http://geodesic.mathdoc.fr/item/JCA_2014_21_3_JCA_2014_21_3_a8/}
}