Link to an interview with Dick Bryan & Mike Rafferty, conducted by Llewellyn Williams-Brooks:
(Note: the first part of the interview is non-substantive background information about publishing this theory in book form, and the substantive discussion of the theory is toward the end).
See also: Michael Hudson, especially “From Marx to Goldman Sachs: The Fictions of Fictitious Capital”, and “We Have Nothing to Lose but Our Debts”, and The Debt Collective