Key points are not available for this paper at this time.
We present a new determination of the QSO luminosity function and its evolution based primarily on a large, complete catalogue of 420 faint (B20 mag), the number–magnitude relation for QSOs exhibits a departure from the steep power-law slope seen at brighter (B−23) QSOs in the survey. However, incompleteness in the original catalogue at these magnitudes may be responsible for this effect.
Boyle et al. (1988) studied this question.