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WikiPedia: Pi_Arietis http://aladin.u-strasbg.fr/AladinPreview?-c=02+49+... http://aladin.u-strasbg.fr/java/nph-aladin.pl?scri... http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=pi+... http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%208... //arxiv.org/abs/0708.1752 //arxiv.org/abs/0806.2878 //arxiv.org/abs/1108.4971 //doi.org/10.1051%2F0004-6361:20078357 //doi.org/10.1086%2F111220