Svedberg, The; Nichols, J. Burton. "Determination of the size and distribution of size of particle by centrifugal methods". Journal of the American Chemical Society. 45 (12). 1923: 2910–2917. doi:10.1021/ja01665a016.
Svedberg, The; Rinde, Herman. "The ulta-centrifuge, a new instrument for the determination of size and distribution of size of particle in amicroscopic colloids". Journal of the American Chemical Society. 46 (12). 1924: 2677–2693. doi:10.1021/ja01677a011.