Competition and Techincal Change in the U. S. Telephone IndustryNakil Sung · First published 2021Open the Tome
Global Economy and Digital SocietyErik Bohlin, Stanford L. Levin, Nakil Sung, Chang-Ho Yoon · First published 2004Open the Tome
Competition and technical change in the U.S. telephone industryNakil Sung · First published 1997Open the Tome
