(en) Andrzej Udalskiet al. (OGLE), « Search for planetary and low-luminosity object transits in the galactic disk. Results of 2001 campaign — Supplement », Acta Astronomica, vol. 52, , p. 115-128 (Bibcode2002AcA....52..115U, arXivastro-ph/0207133, lire en ligne [[GIF]], consulté le )
(en) Andrzej Udalskiet al. (OGLE), « Search for planetary and low-luminosity object transits in the galactic disk. Results of 2001 campaign — Supplement », Acta Astronomica, vol. 52, , p. 115-128 (Bibcode2002AcA....52..115U, arXivastro-ph/0207133, lire en ligne [[GIF]], consulté le )
(en) Andrzej Udalskiet al. (OGLE), « Search for planetary and low-luminosity object transits in the galactic disk. Results of 2001 campaign — Supplement », Acta Astronomica, vol. 52, , p. 115-128 (Bibcode2002AcA....52..115U, arXivastro-ph/0207133, lire en ligne [[GIF]], consulté le )