The first Birkhoff coefficient and the stability of 2-periodic orbits on billiards.
Kamphorst, Sylvie Oliffson ; Pinto-de-Carvalho, Sônia
Experimental Mathematics, Tome 14 (2005), p. 299-306 / Harvested from The Electronic Library of Mathematics
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Publié le : 2005-01-01
DOI : https://doi.org/10.1080/10586458.2005.10128923
EUDML-ID : urn:eudml:doc:55277 
@article{02244486,
     title = {The first Birkhoff coefficient and the stability of 2-periodic orbits on billiards.},
     journal = {Experimental Mathematics},
     volume = {14},
     year = {2005},
     pages = {299-306},
     doi = {10.1080/10586458.2005.10128923},
     zbl = {1159.37423},
     language = {en},
     url = {http://dml.mathdoc.fr/item/02244486}
}

Kamphorst, Sylvie Oliffson; Pinto-de-Carvalho, Sônia. The first Birkhoff coefficient and the stability of 2-periodic orbits on billiards.. Experimental Mathematics, Tome 14 (2005) pp. 299-306. doi : 10.1080/10586458.2005.10128923. http://gdmltest.u-ga.fr/item/02244486/