Original: The Royal Swedish Academy of Sciences ( 2006 ) , '' Edmund Phelps 's Contributions to Macroeconomics '' ( see References ) During this period , along with the research on the Phillips curve , Phelps also collaborated with other economists on research regarding economic growth , the effects of monetary and fiscal policy and optimal population growth .
Simplified: The Royal Swedish Academy of Sciences ( 2006 ) , '' Edmund Phelps 's Contributions to Macroeconomics '' ( see References ) During this time Phelps worked with other economists on research of economic growth , the effects of monetary and fiscal policy and best population growth .