Refine
Has Fulltext
- no (4)
Document Type
- Article (4) (remove)
Language
- English (4)
Is part of the Bibliography
- yes (4)
Keywords
- quasars: absorption lines (4)
- intergalactic medium (3)
- cosmology: observations (2)
- atomic processes (1)
- cosmology: miscellaneous (1)
- cosmology: miscellaneous cosmology (1)
- elementary particles (1)
- line: formation (1)
- observations (1)
- quasars: individual: HE 0027-1836 (1)
- quasars: individual: HE 2217-2818 (1)
- quasars: individual: HS 1549+1919 (1)
- techniques: spectroscopic (1)