共 6 条
[2]
BRONFENBRENNER M, 1939, AM ECON REV, V29, P794
[3]
FELSENTHAL L, 1940, THESIS U CHICAGO
[4]
GUNN GT, 1941, AM ECON REV, V31, P76
[6]
ROBINSON J, 1933, EC IMPERFECT COMPETI, P248