por Herbsman, Zohar J | Ellis, Ralph, coaut.
por Furr, Howard L | National Research Council. Transportation Research Board (E-.U.A.).
por National Research Council. Transportation Research Board (E-.U.A.).
por Collins, Robert J | Ciesielski, Stanley K., coaut | National Research Council. Transportation Research Board (E-.U.A.).
por Hancher, Donn E | National Research Council. Transportation Research Board (E-.U.A.).
por Epps, Jon A | National Research Council. Transportation Research Board (E-.U.A.).