Government financing

The Natural Rate of Interest is Zero. Mathew Forstater and Warren Mosler.

The self-financing state: An institutional analysis of government expenditure, revenue collection and debt issuance operations in the United Kingdom. UCL Institute for Innovation and Public Purpose

What to Do with Modern Money Theory (MMT)? Dirk Ents (paywall)

Modern monetary theory and its critics Multiple authors

The Debt Ratio and Sustainable Macroeconomic Policy. Scott T. Fullwiler

Monetary Sovereignty 

Is Monetary Sovereignty an Option for the Small Open Economy? Christos C. Paraskevopoulos, John Paschakis and John Smithin.

Organisations (MMT)

Modern Money Scotland

Modern Money Lab

Levi Economics Institute

Organisations (Ecologial Economics)