共 50 条
- [44] Principal component analysis of the CIV lambda 1549 emission-line in active galactic nuclei ASTRONOMICAL TIME SERIES, 1997, 218 : 251 - 254
- [49] STABILITY OF EMISSION-LINE CLOUDS IN SEYFERT-GALAXIES ACTIVE GALACTIC NUCLEI /, 1989, 134 : 303 - 304