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Article Contents

ABSTRACT

1.INTRODUCTION

2.HISTORICAL INTRODUCTION

3.QL AS PROBE OF LENS GALAXIES
3.1.Introduction
3.2.Lensed substructure
3.3.Lensed substructure in other galaxies
3.4.Black holes and central potentials of lens galaxies

4.QL MICROLENSING: A PROBE OF QUASAR STRUCTURE

5.QL AS PROBE OF COSMOLOGY
5.1.Cosmological parameters
5.2.Galaxy evolution

6.THE FUTURE; BIGGER SAMPLES, AND HOW TO FIND THEM

7.SUMMARY AND CONCLUSION

REFERENCES