On the costs of multiple trajectory pointing methods. - Philip Quinn; Andy Cockburn; Kari-Jouko Räihä; Jérôme Delamarche (CHI, 2011)

Examining the costs of multiple trajectory pointing techniques. - Philip Quinn; Andy Cockburn; Jérôme Delamarche (Int. J. Hum. Comput. Stud., 2013)