The ORGANIZATION@1 -LRB- NUMBER@1 -RRB- , `` PERSON@1 's Contributions to Macroeconomics '' -LRB- see References -RRB- During this period , along with the research on the ORGANIZATION@2 curve , PERSON@2 also collaborated with other economists on research regarding economic growth , the effects of monetary and fiscal policy and optimal population growth .

The ORGANIZATION@1 -LRB- NUMBER@1 -RRB- , `` PERSON@1 's Contributions to Macroeconomics '' -LRB- see References -RRB- During this time PERSON@2 worked with other economists on research of economic growth , the effects of monetary and fiscal policy and best population growth .
