REFERENCES
Adams & Shu 1986 ApJ 308, 836
Ivezic & Elitzur 1997 MNRAS 287, 799
Gregorio-Hetem, Lépine, Ortiz 1990 Rev. Mexicana Astron, y Astrof. 21, 356
Gregorio-Hetem et al. 1992 AJ 103, 549
Hartmann, Calvet, Gullbring, D'Alessio 1998 ApJ 495, 385
Hetem et al. 1994 Circumstellar Dust Disk Planet Formation, eds. R. Ferlet and A. Vidal-Madjar, p.369.
Lynden-Bell & Pringle 1974 MNRAS 168, 603
Ossenkopf 1993 A&A 280, 617
Rowan-Robinson 1980 ApJS 44, 403
Torres et al. 1995 AJ 109, 2146