Optimal control of driftless nilpotent systems: some new results. - Sunil Kumar Agrawal; Shourov Bhattacharya (IROS, 1999)

Design, Experiments and Motion Planning of a Spherical Rolling Robot. - Shourov Bhattacharya; Sunil Kumar Agrawal (ICRA, 2000)

Spherical rolling robot: a design and motion planning studies. - Shourov Bhattacharya; Sunil K. Agrawal (IEEE Trans. Robotics Autom., 2000)

Igwana: a text-free search interface. - Shourov Bhattacharya; Luke Feldman (OZCHI, 2012)