Notes/Slides written for invited lectures in conferences/workshops:

1. Notes for the lectures given in the Allahabad Low Dimensional Topology Instructional Conference are  here .
2. Notes for the lecture given in the Chennai Topological Methods in Group Theory Workshop is  here .
3. Slides of the lecture given in the Satellite Conference of the ICM2002 on Geometric Topology, Xi'an, China are here .
4. Slides of the lecture (short communication) given in the ICM2002, Beijing, China are  here .
5. Slides of the lecture given in the joint India-AMS Mathematics meeting for the special session on Algebraic and Geometric Topology, Bangalore, India are here .
6. Notes for the lectures given in the Bangalore advanced instructional workshop on low-dimensional topology and geometric group theory are here .
   
7. Notes for the lectures given in the Shillong advanced instructional school in Algebraic Topology are here .
8. Slides of the lecture given in the Kunming, China conference on Group actions and applications in Geometry, Topology and Analysis are here.
   
9. Slides of the lecture given in the Delhi, India 27th Annual Conference of the Ramanujan Mathematical Society are here.
   
10. Notes of the lectures given in the Shillong International Advance Training in Mathematics (ATM) workshop/conference on surgery theory and classification of manifolds are here.
    
11. Slides of the Plenary Talk in the Annual Mathematics Symposium of IISER, Bhopal here.