According to Wikipedia Theory of the firm is a collection of economic theories that explain and predict the nature of the firm, company, or corporation, including its existence, behaviour, structure, and relationship to the market.
Radical markets is an economic theory developed by Eric Posner and Glen Weyl.
Book (unrated)
Videos:
Glen Weyl: "Radical Markets: Uprooting Capitalism & Democracy for a Just Society" | Talks at Google (rating: 6/10)
Radical markets: Uprooting capitalism and democracy for a just society
Radical Markets: Uprooting Capitalism and Democracy for a Just Society (unrated)
According to Wikipedia, Quadratic Voting is a collective decision-making procedure, where participants express how strongly they feel about an issue rather than just whether they are in favor of it or opposed to it.