@article{10_4171_dm_897,
     author = {Benjamin Passer},
     title = {Complex free spectrahedra, absolute extreme points, and dilations},
     journal = {Documenta mathematica},
     pages = {1275--1297},
     year = {2022},
     volume = {27},
     doi = {10.4171/dm/897},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/dm/897/}
}