33 (1995) 19–73*"The Unusual Pre-Main-Sequence star VY Tauri", ApJ 360 (1990) 639–649*"The Structure and Spectrum of R Monocerotis", ApJ 152 (1968) 439*"The Spectra of Two Nebulous Objects Near NGC 1999", ApJ 113 (1951) 697==References==
33 (1995) 19—73* «The Unusual Pre-Main-Sequence star VY Tauri», ApJ 360 (1990) 639—649* «The Structure and Spectrum of R Monocerotis», ApJ 152 (1968) 439* «The Spectra of Two Nebulous Objects Near NGC 1999», ApJ 113 (1951) 697