A comparison of order picking assisted by head-up display (HUD), cart-mounted display (CMD), light, and paper pick list. - Anhong Guo; Shashank Raghu; Xuwen Xie; Saad Ismail; Xiaohui Luo; Joseph Simoneau; Scott M. Gilliland; Hannes Baumann; Caleb Southern; Thad Starner (ISWC, 2014)