共 6 条
[1]
FRIEDMAN M, 1986, PRICE THEORY
[2]
Heyne P, 1987, EC WAY THINKING
[3]
MIXON JW, 1987, APPL ENERG, V26, P1
[4]
1973, CONSUMER REPORTS OCT, P608
[5]
1987, NATIONAL PETROLEUM N
[6]
1987, J EC PERSPECTIVE SUM, P185