Mg II absorption lines in z=2.974 damped Ly{alpha} system toward gravitationally lensed QSO APM 08279+5255: detection of small-scale structure in mg II absorbing clouds
Mg II absorption lines in z=2.974 damped Ly{alpha} system toward gravitationally lensed QSO APM 08279+5255: detection of small-scale structure in mg II absorbing clouds(English)