Butler, K.
, Baum, H.
and Kashiwagi, T.
(1994),
Three-Dimensional Kinetic Model for the Swelling of Intumescent Materials (NISTIR 5499), NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.5499
(Accessed April 7, 2025)