Rohou, S., Franek, P., Aubry, C., &; Jaulin, L. (2018). Proving the existence of loops in robot trajectories. The International Journal of Robotics Research. SAGE Publications.https://doi.org/10.1177/0278364918808367 
LibreCat: https://research-explorer.ista.ac.at/record/5960
DOI: 10.1177/0278364918808367
WoS: 000456881100004
arXiv: 1712.01341