Research field (1)：
Public economics, labor economics
Research keywords (10)：
Public Nursing Care Insurance
, Public Assistance system for the poor
, Public Medical System
, Public Pension
, Local Government Finance
, tax
, government deficits
, government bond
, fiscal and monetary policy
, Fiscal Investments and Loans Program
Papers (20)：
Koyama Koichi. The Institutional Analysis of the Japanese Public Pension System. The Economic Studies (Hokkaido University). 2011. 60. 4. 1-54
Koyama Koichi, Nakanishi Yoshiyuki. Economic Analysis of Institutions for International Double Taxation Avoidance. The Economic Studies (Hokkaido University). 2010. 60. 1. 1-32
Koyama Koichi. A Contribution to the Structure of Japanese Local Public Finance. The Economic Studies (Hokkaido University). 2009. 59. 2. 1-17
Koyama Koichi. The Structure of Cost Sharing in the New Japanese Medical System. The Economic Studies (Hokkaido Unversity). 2006. 56. 1. 39-56
Koyama Koichi. The Model Analysis of Medical Market. The Economic Studies (Hokkaido University). 2005. 55. 2. 1-12
