@InProceedings{roy:DagSemProc.05021.20,
author = {Roy, Marie-Fran\c{c}oise},
title = {{Subdiscriminant of symmetric matrices are sums of squares}},
booktitle = {Mathematics, Algorithms, Proofs},
pages = {1--4},
series = {Dagstuhl Seminar Proceedings (DagSemProc)},
ISSN = {1862-4405},
year = {2006},
volume = {5021},
editor = {Thierry Coquand and Henri Lombardi and Marie-Fran\c{c}oise Roy},
publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
address = {Dagstuhl, Germany},
URL = {https://drops.dagstuhl.de/entities/document/10.4230/DagSemProc.05021.20},
URN = {urn:nbn:de:0030-drops-3471},
doi = {10.4230/DagSemProc.05021.20},
annote = {Keywords: Real algebra, sums of squares, subdiscriminants}
}