Esther M. Arkin Alon Efrat Christian Knauer Joseph S. B. Mitchell Valentin Polishchuk Günter Rote Lena Schlipf Topi Talvitie Shortest Path to a Segment and Quickest Visibility Queries. 658-673 2015 SoCG https://doi.org/10.4230/LIPIcs.SOCG.2015.658 conf/compgeom/2015 db/conf/compgeom/compgeom2015.html#ArkinEKMPRST15