Grossman and Barro expanded on their work and produced the classic textbook Money, Employment, and Inflation in 1976.
[7] Following his work on disequilibrium, Grossman made several contributions to the study of economic policy and political economy.
In a 2003 paper he explored the use of expected future scarcity as an explanatory variable in current conflicts.
[11] Grossman's work showed how property rights could emerge in a decentralized manner.
He found a centralized authority would emerge when creating defensive work were relatively expensive and appropriations (taxation) were relatively easy.