Determining internal porosity in Prussian blue analogue cathode materials using positron annihilation lifetime spectroscopy. D. Boras, I. Nielsen, A. Buckel, T. Ericsson, L. Häggström, R. Younesi, T. Stabb, W.R. Brant. Journal of Material Science; Vol. 58. (2023) https://link.springer.com/article/10.1007/s10853-023-09025-x
