2448-718X 2448-718X S2448-718X2008000200403 Chile 00 06 2008 00 06 2008 75 298 403 431

1994 1400 90-4 1964 1996 91 444-72 1994 1983 20 147-58 1987 95 81-8 2000 1988 78 89-107 2001 50 1-25 1980 2003 1976 3 357-69 1975 WP 21-5-76 WP 21-5-76 1998 1617 38-43 1979 1993 69 54-66 2005 57 148-69 1982 90 536-60 1992 16 139-46 1989 19 493-516 1991 99 774-806 1976 66 743-53 1997 64 605-54 1973 1994 25 261-78 2004 32 463-86 1967 57 197-210 1969 Transportation Research Board 1993 1996 18 1980 1982 90 1257-78 1974 82 34-55 1983 70 41-55 1974 66 688-701 1987 1996 11 71-105 1991 31 127-45 1863 1961 1982 90 917-43