Gary, Dennis; Art Peterson. A technology alternative to the VAL system on the O'Hare Airport Transit System (OATS). Proceedings of the 2000 ASME/IEEE Joint Railroad Conference, Newark, NJ, USA, 2000. IEEE. doi:10.1109/RRCON.2000.870001. S2CID109698833. Paid subscription
Gary, Dennis; Art Peterson. A technology alternative to the VAL system on the O'Hare Airport Transit System (OATS). Proceedings of the 2000 ASME/IEEE Joint Railroad Conference, Newark, NJ, USA, 2000. IEEE. doi:10.1109/RRCON.2000.870001. S2CID109698833. Paid subscription