All solids deviate more or less from the theoretical perfectly elastic body and though many experiments have been undertaken in order to explain these deviations, we can hardly claim that any of the numerous theories proposed by the different investigators has yet cleared up the intricate relations involved.
Proceedings of the Iowa Academy of Science
©1908 Iowa Academy of Science, Inc.
Guthe, K. E.
"Some Peculiarities in the Elastic Properties of Certain Substances,"
Proceedings of the Iowa Academy of Science, 15(1), 147-156.
Available at: https://scholarworks.uni.edu/pias/vol15/iss1/24