Monopoly power and economic performance : the problem of industrial concentration
edited by Edwin Mansfield
W.W. Norton, 1964
 Buku Teks
Lutz, F.A.
The problem of Internatinal economic equilibrium / by F.A. Lutz
North-Holland Publishing , 1966
 Buku Teks
Human capital and economic growth : Dynamic implications of insider - outsider problem for macroeconomics
 Artikel Jurnal
Broadbridge, Seymour
Industrial dualism in Japan a problem of economic growth and structural change
Frank Cass, 1976
 Buku Teks
Significance of a behavioral economic index of reward value in predicting drinkin problem resolution
 Artikel Jurnal