1. H. Bechold and S. Neumann, Angew. Chem. 37, 569 (1924); Angew. Chem. 37, 225 (1924); Angew. Chem. 37, 534 (1924).
2. P. Ya. Chernykh, Historic Etymologic Dictionary of Modern Russian (Russkii Yazyk, Moscow, 1994) [in Russian].
3. Ya. M. Gel’fer, History and Methodology of Thermodynamics and Statistical Physics (Vysshaya Shkola, Moscow, 1969) [in Russian].
4. Encyclopedia of Polymers (Sovetskaya Entsiklopediya, Moscow, 1972) [in Russian].
5. K. W. Allen, in Aspects of Adhesion, Ed. by D. J. Alner (University of London Press, London, 1969), Vol. 5, p. 11.