Socio-Economic Planning Sciences
Socio-Economic Planning Sciences > 2008 > 42 > 3 > 206-220
Socio-Economic Planning Sciences > 2008 > 42 > 3 > 158-189
Socio-Economic Planning Sciences > 2008 > 42 > 3 > 190-205
Socio-Economic Planning Sciences > 2008 > 42 > 3 > 151-157