\input zb-basic \input zb-ioport \iteman{io-port 70166854} \itemau{Amaoka, Toshitaka; Laga, Hamid; Saito, Suguru; Nakajima, Masayuki} \itemti{Personal space modeling for human-computer interaction} \itemso{ICEC, 60-72 (2009).} \itemcc{} \itemut{} \itemli{doi:10.1007/978-3-642-04052-8\_6} \end