1 INTRODUCTION

2 OBSERVATIONAL STRATEGY AND ACQUIRED DATA

3 MORPHOLOGICAL MODELLING TECHNIQUE

4 LENSING MASS MODELS

5 COMPARISON WITH OTHER AVAILABLE DATA

6 DISCUSSION OF THE TECHNIQUE

7 QUASAR HOST GALAXIES IN THE AO SAMPLE

8 LENS GALAXY LIGHT-MASS PROFILE AND ENVIRONMENT

9 CONCLUSIONS AND FUTURE PROSPECTS