@Article{robotics4010063,
AUTHOR = {Dondrup, Christian and Bellotto, Nicola and Hanheide, Marc and Eder, Kerstin and Leonards, Ute},
TITLE = {A Computational Model of Human-Robot Spatial Interactions Based on a Qualitative Trajectory Calculus},
JOURNAL = {Robotics},
VOLUME = {4},
YEAR = {2015},
NUMBER = {1},
PAGES = {63--102},
URL = {http://www.mdpi.com/2218-6581/4/1/63},
ISSN = {2218-6581},
DOI = {10.3390/robotics4010063}
}