Devaux, J., Legras, R., Delimoy, D., Daoust, D., Mercier, JP., Strazielle, C., & Nield, E. (1985). On the Molecular-weight Determination of a Poly(aryl-ether-ether-ketone) (peek). Polymer, 26(13), 1994-2000. https://doi.org/10.1016/0032-3861(85)90179-X (Original work published 1985)