Balian, Roger; Balazs, N. L. (October 1, 1987). "Equiprobability, inference, and entropy in quantum theory". Annals of Physics. 179 (1): 97–144. doi:10.1016/S0003-4916(87)80006-4. ISSN 0003-4916. https://www.sciencedirect.com/science/article/pii/S0003491687800064