Kevin Buchin Maike Buchin Marc J. van Kreveld Jun Luo Finding long and similar parts of trajectories. 465-476 2011 44 Comput. Geom. 9 http://dx.doi.org/10.1016/j.comgeo.2011.05.004 db/journals/comgeo/comgeo44.html#BuchinBKL11