@article{Zyczkowski2014h,
doi = {http://dx.doi.org/10.1016/j.laa.2015.03.029},
title = {Real numerical shadow and generalized B-splines},
url = {http://www.sciencedirect.com/science/article/pii/S0024379515002050},
journal = {Linear Algebra and its Applications},
author = {Charles F. Dunkl and Piotr Gawron and \L{}ukasz Pawela and Zbigniew Pucha\l{}a and Karol \.Zyczkowski},
volume = {479},
year = {2015},
pages = {12 - 51},
keywords = {Numerical range},
issn = {0024-3795}
}