.  
2014.  Sidewinding with minimal slip: snake and robot ascent of sandy slopes. Science. 346:224–229.
.  
2016.  Geometric Swimming on a Granular Surface. {Proceedings of the Robotics: Science and Systems Conference}. :1–8.
.  
2020.  Surprising simplicities and syntheses in limbless self-propulsion in sand. Journal of Experimental Biology . 223
 ]
]