1. Demkin, N.B. and Kragel’skii, I.V., Pre-Displacement in Elastic Contact of Solids, Dokl. Akad. Nauk SSSR, 1969, vol. 186, no. 4, pp. 812–813.
2. Verkhovskii, A.V., Phenomenon of Pre-Displacement at Start of Sliding of Unlubricated Surfaces, J. of Tekh. Fiz., 1926, issues 3–4, no. 3, pp. 311–313.
3. Rankin, J.S., The Elastic Range of Friction, Philos. Mag., 1926, vol. 2, no. 10, pp. 806–817.
4. Kragel’skii, I.V. and Mikhin, N.M., On Nature of Contact Pre-Displacement of Solids, Dokl. Akad. Nauk SSSR, 1963, vol. 153, no. 1, pp. 78–81.
5. Mitrofanov, B.P., Nature of Elastic Pre-Displacement, in Teoriya treniya i iznosa (Theory of Friction and Wear), Moscow: Nauka, 1965, pp. 8–11.