We incorporate previously omitted controls of external conditions in transportation and commodity markets into Porter's (1983) analysis of industry demand, conduct and stability of the JEC railroad cartel. We estimate the equilibrium price path, non-parametrically, and find that the reaction of...

The representation of a large number of students born outside the United States among the ranks of doctorate recipients from U.S. universities is one of the most significant transformations in U.S. graduate education and the international market for highly-trained workers in science and...